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Respiration Gas Exchange
 
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Views: 483530 Armando Hasudungan
Alveoli: Gas Exchange
 
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Revision notes and practice question for gas exchange: https://www.tes.com/teaching-resource/gas-exchange-11804216 Follow me on Instagram: https://www.instagram.com/sciencesauce_online/ Twitter: https://twitter.com/science_sauce Facebook: https://facebook.com/sciencesauceonline/ The alveoli ("many alveoli", "one alveolus") are the sites of gas exchange in the lungs. They are tiny air sacks sometimes described as being cauliflower-shaped. Oxygen diffuses across the lining of the alveoli and blood capillaries into and into red blood cells. Carbon dioxide diffuses from the blood to the alveoli. A concentration gradient is maintained by breathing as well as blood flow. The main adaptation of the gas exchange surface are: 1. Large surface area 2. Thin wall 3. Moist lining 4. Good blood supply 5. Good ventilation
Views: 148035 Science Sauce
Gas Exchange in Alveoli Animation - Pathway of Air through Respiratory System Video – How Lungs Work
 
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Air first enters the body through the mouth or nose, quickly moves to the pharynx (throat), passes through the larynx (voice box), enters the trachea, which branches into a left and right bronchus within the lungs and further divides into smaller and smaller branches called bronchioles. The smallest bronchioles end in tiny air sacs, called alveoli, which inflate during inhalation, and deflate during exhalation. Gas exchange is the delivery of oxygen from the lungs to the bloodstream, and the elimination of carbon dioxide from the bloodstream to the lungs. It occurs in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli. The walls of the alveoli actually share a membrane with the capillaries in which oxygen and carbon dioxide move freely between the respiratory system and the bloodstream. Oxygen molecules attach to red blood cells, which travel back to the heart. At the same time, the carbon dioxide molecules in the alveoli are blown out of the body with the next exhalation. The primary function of the respiratory system is to exchange oxygen and carbon dioxide. Inhaled oxygen enters the lungs and reaches the alveoli. The layers of cells lining the alveoli and the surrounding capillaries are each only one cell thick and are in very close contact with each other. This barrier between air and blood averages about 1 micron (1/10,000 of a centimeter, or 0.000039 inch) in thickness. Oxygen passes quickly through this air-blood barrier into the blood in the capillaries. Similarly, carbon dioxide passes from the blood into the alveoli and is then exhaled. Oxygenated blood travels from the lungs through the pulmonary veins and into the left side of the heart, which pumps the blood to the rest of the body (see Biology of the Heart : Function of the Heart). Oxygen-deficient, carbon dioxide-rich blood returns to the right side of the heart through two large veins, the superior vena cava and the inferior vena cava. Then the blood is pumped through the pulmonary artery to the lungs, where it picks up oxygen and releases carbon dioxide. Gas Exchange Between Alveoli and Capillaries: To support the exchange of oxygen and carbon dioxide, about 5 to 8 liters (about 1.3 to 2.1 gallons) of air per minute are brought in and out of the lungs, and about three tenths of a liter of oxygen is transferred from the alveoli to the blood each minute, even when the person is at rest. At the same time, a similar volume of carbon dioxide moves from the blood to the alveoli and is exhaled. During exercise, it is possible to breathe in and out more than 100 liters (about 26 gallons) of air per minute and extract 3 liters (a little less than 1 gallon) of oxygen from this air per minute. The rate at which oxygen is used by the body is one measure of the rate of energy expended by the body. Breathing in and out is accomplished by respiratory muscles. Air is brought to the alveoli in small doses (called the tidal volume), by breathing in (inhalation) and out (exhalation) through the respiratory airways, a set of relatively narrow and moderately long tubes which start at the nose or mouth and end in the alveoli of the lungs in the chest. Air moves in and out through the same set of tubes, in which the flow is in one direction during inhalation, and in the opposite direction during exhalation. During each inhalation, at rest, approximately 500 ml of fresh air flows in through the nose. Its is warmed and moistened as it flows through the nose and pharynx. By the time it reaches the trachea the inhaled air's temperature is 37 °C and it is saturated with water vapor. On arrival in the alveoli it is diluted and thoroughly mixed with the approximately 2.5–3.0 liters of air that remained in the alveoli after the last exhalation. This relatively large volume of air that is semi-permanently present in the alveoli throughout the breathing cycle is known as the functional residual capacity (FRC). At the beginning of inhalation the airways are filled with unchanged alveolar air, left over from the last exhalation. This is the dead space volume, which is usually about 150 ml. It is the first air to re-enter the alveoli during inhalation. Only after the dead space air has returned to the alveoli does the remainder of the tidal volume (500 ml - 150 ml = 350 ml) enter the alveoli. The entry of such a small volume of fresh air with each inhalation, ensures that the composition of the FRC hardly changes during the breathing cycle.
Views: 26308 AniMed
Gas Exchange Physiology Animation - MADE EASY
 
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Gas Exchange Physiology Animation ✔✔✔FOR MORE MEDICAL VIDEOS VISIT: http://freemedicalvideos.com/ Website: http://www.medical-institution.com/ Facebook: http://www.facebook.com/Medicalinstit... Twitter: https://twitter.com/USMLE_HighYield This information is intended for educational purposes only, and should not be interpreted as medical advice. Please consult your physician for advice about changes that may affect your health. This Animation video teaches you the basic concept of Gas Exchange Physiology in the respiratory system. What is gas exchange How does gas exchange work Why is gas exchange important Oxygen exchange Respiratory system
Views: 543823 Medical Institution
Gas Exchange in Lungs Made Easy
 
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Gas Exchange Lungs. Dr. Mobeen discusses following topics in this video: Atmospheric gas pressures Water vapor pressure and its effect on the atmospheric pressure Pressure changes during inspiration Composition of the exhaled gases Factors affecting partial pressure of the oxygen Factors affecting partial pressure of the carbon dioxide
Gas exchange
 
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Why do our bodies need to exchange oxygen and carbon dioxide with the air, and how do they do it? This video is part of our Body Systems unit. You can find out more about Stile at https://stileeducation.com/ or check out the unit here: https://stileapp.com/au/library/publishers/cosmos-magazine/compilations/cosmos-lessons/5791d5d0-d006-4efb-8974-9294b6b56048
Views: 24495 Stile Education
Travel of Air Through Respiratory System - Gas Exchange in the Lungs - Nose to Alveoli Pathway
 
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Gas Exchange - Delivery of Oxygen & Elimination of Carbon dioxide - Medical Animation Air first enters the body through the mouth or nose, quickly moves to the pharynx (throat), passes through the larynx (voice box), enters the trachea, which branches into a left and right bronchus within the lungs and further divides into smaller and smaller branches called bronchioles. The smallest bronchioles end in tiny air sacs, called alveoli, which inflate during inhalation, and deflate during exhalation. Gas exchange is the delivery of oxygen from the lungs to the bloodstream, and the elimination of carbon dioxide from the bloodstream to the lungs. It occurs in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli. The walls of the alveoli actually share a membrane with the capillaries in which oxygen and carbon dioxide move freely between the respiratory system and the bloodstream. Oxygen molecules attach to red blood cells, which travel back to the heart. At the same time, the carbon dioxide molecules in the alveoli are blown out of the body with the next exhalation.
Views: 23822 Science Art
Oxygen movement from alveoli to capillaries | NCLEX-RN | Khan Academy
 
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Watch as a molecule of oxygen makes its way from the alveoli (gas layer) through various liquid layers in order to end up in the blood. Rishi is a pediatric infectious disease physician and works at Khan Academy. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. Created by Rishi Desai. Watch the next lesson: https://www.khanacademy.org/test-prep/nclex-rn/rn-respiratory-system/rn-the-respiratory-system/v/the-respiratory-center?utm_source=YT&utm_medium=Desc&utm_campaign=Nclex-rn Missed the previous lesson? https://www.khanacademy.org/test-prep/nclex-rn/rn-respiratory-system/rn-the-respiratory-system/v/fick-s-law-of-diffusion?utm_source=YT&utm_medium=Desc&utm_campaign=Nclex-rn NCLEX-RN on Khan Academy: A collection of questions from content covered on the NCLEX-RN. These questions are available under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 United States License (available at http://creativecommons.org/licenses/by-nc-sa/3.0/us/). About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s NCLEX-RN channel: https://www.youtube.com/channel/UCDx5cTeADCvKWgF9x_Qjz3g?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Views: 347452 khanacademymedicine
Respiratory System, part 1: Crash Course A&P #31
 
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So we all know that breathing is pretty important, right? Today we're going to talk about how it works, starting with the nameless evolutionary ancestor that we inherited this from, and continuing to the mechanics of both simple diffusion and bulk flow, as well as the physiology of breathing, and finishing with the anatomy of both the conducting zone and the respiratory zone of your respiratory system. Table of Contents The Mechanics of Both Simple Diffusion and Bulk Flow 2:44 The Physiology of Breathing 4:07 Anatomy of the Conducting Zone 5:47 Anatomy of Respiratory Zone 7:07 *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark, Jan Schmid, Simun Niclasen, Robert Kunz, Daniel Baulig, Jason A Saslow, Eric Kitchen, Christian, Beatrice Jin, Anna-Ester Volozh, Eric Knight, Elliot Beter, Jeffrey Thompson, Ian Dundore, Stephen Lawless, Today I Found Out, James Craver, Jessica Wode, Sandra Aft, Jacob Ash, SR Foxley, Christy Huddleston, Steve Marshall, Chris Peters -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Views: 2037503 CrashCourse
GCSE Science Biology (9-1) Gas exchange in the lungs
 
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In this video, we look at how gases are exchanged in the lungs. We start by looking at the overall structure of the lungs and then explore how the alveoli are adapted for maximum diffusion of gases in and out of the bloodstream. Deliberate Thought by Kevin MacLeod is licensed under a Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/?keywords=deliberate+thought Artist: http://incompetech.com/ Image credits: All images were created by and are the property of Autonomy Education Ltd.
Views: 70778 Freesciencelessons
Gas exchange 2- Partial pressures O2 & CO2
 
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Part 2 in an 8 part lecture on GAS EXCHANGE in a flipped Human Physiology course taught by Wendy Riggs. CC-BY. Watch the whole lecture (all 8 videos) by going to the PLAYLIST: https://www.youtube.com/playlist?list=PL5GRRRmaGVqWBUpn0V2lszcbNp_-TIJ0E
Views: 33225 Wendy Riggs
Respiratory System, part 2: Crash Course A&P #32
 
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Can a paper bag really help you when you are hyperventilating? It turns out that it can. In part 2 of our look at your respiratory system Hank explains how your blood cells exchange oxygen and CO2 to maintain homeostasis. We'll dive into partial pressure gradients, and how they, along with changes in blood temperature, acidity, and CO2 concentrations, change how hemoglobin binds to gases in your blood. (And yes, we'll explain the paper bag thing too!) Table of Contents How Blood Cells Exchange Oxygen and CO2 2:23 Partial Pressure Gradients 2:41 How Hemoglobin Binds to Gases in the Blood 4:40 The Thing With The Bag 9:04 *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark, Jan Schmid, Simun Niclasen, Robert Kunz, Daniel Baulig, Jason A Saslow, Eric Kitchen, Christian, Beatrice Jin, Anna-Ester Volozh, Eric Knight, Elliot Beter, Jeffrey Thompson, Ian Dundore, Stephen Lawless, Today I Found Out, James Craver, Jessica Wode, Sandra Aft, Jacob Ash, SR Foxley, Christy Huddleston, Steve Marshall, Chris Peters -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Views: 1116416 CrashCourse
Gaseous exchange between alveoli and capillaries
 
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A little more detail of the exchange of oxygen between alveoli and capillaries
Human Lungs - The Process of Absorbtion of Oxygen
 
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In this video we talk about how oxygen is absorbed by the lungs and the mechanism behind the transfer of the gas to the different tissues in the human body. To know more about the gas exchange in the lungs and the process of respiration you can visit here - https://byjus.com/biology/respiration-gas-exchange/
Views: 768 BYJU'S
What Happens When You Breathe? How The Lungs Work Animation - Respiratory System Gas Exchange  Video
 
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Breathing In (Inhalation) When you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. This increases the space in your chest cavity, into which your lungs expand. The intercostal muscles between your ribs also help enlarge the chest cavity. They contract to pull your rib cage both upward and outward when you inhale. As your lungs expand, air is sucked in through your nose or mouth. The air travels down your windpipe and into your lungs. After passing through your bronchial tubes, the air finally reaches and enters the alveoli (air sacs). Through the very thin walls of the alveoli, oxygen from the air passes to the surrounding capillaries (blood vessels). A red blood cell protein called hemoglobin (HEE-muh-glow-bin) helps move oxygen from the air sacs to the blood. At the same time, carbon dioxide moves from the capillaries into the air sacs. The gas has traveled in the bloodstream from the right side of the heart through the pulmonary artery. Oxygen-rich blood from the lungs is carried through a network of capillaries to the pulmonary vein. This vein delivers the oxygen-rich blood to the left side of the heart. The left side of the heart pumps the blood to the rest of the body. There, the oxygen in the blood moves from blood vessels into surrounding tissues. Breathing Out (Exhalation) When you breathe out, or exhale, your diaphragm relaxes and moves upward into the chest cavity. The intercostal muscles between the ribs also relax to reduce the space in the chest cavity. As the space in the chest cavity gets smaller, air rich in carbon dioxide is forced out of your lungs and windpipe, and then out of your nose or mouth. Breathing out requires no effort from your body unless you have a lung disease or are doing physical activity. When you're physically active, your abdominal muscles contract and push your diaphragm against your lungs even more than usual. This rapidly pushes air out of your lungs. How the Lungs and Respiratory System Work You usually don't even notice it, but twelve to twenty times per minute, day after day, you breathe -- thanks to your body's respiratory system. Your lungs expand and contract, supplying life-sustaining oxygen to your body and removing from it, a waste product called carbon dioxide. The Act of Breathing Breathing starts at the nose and mouth. You inhale air into your nose or mouth, and it travels down the back of your throat and into your windpipe, or trachea. Your trachea then divides into air passages called bronchial tubes. For your lungs to perform their best, these airways need to be open during inhalation and exhalation and free from inflammation or swelling and excess or abnormal amounts of mucus. The Lungs As the bronchial tubes pass through the lungs, they divide into smaller air passages called bronchioles. The bronchioles end in tiny balloon-like air sacs called alveoli. Your body has over 300 million alveoli. The alveoli are surrounded by a mesh of tiny blood vessels called capillaries. Here, oxygen from the inhaled air passes through the alveoli walls and into the blood. After absorbing oxygen, the blood leaves the lungs and is carried to your heart. Your heart then pumps it through your body to provide oxygen to the cells of your tissues and organs. As the cells use the oxygen, carbon dioxide is produced and absorbed into the blood. Your blood then carries the carbon dioxide back to your lungs, where it is removed from the body when you exhale. The Diaphragm's Role in Breathing Inhalation and exhalation are the processes by which the body brings in oxygen and expels carbon dioxide. The breathing process is aided by a large dome-shaped muscle under the lungs called the diaphragm. When you breathe in, the diaphragm contracts downward, creating a vacuum that causes a rush of fresh air into the lungs. The opposite occurs with exhalation, where the diaphragm relaxes upwards, pushing on the lungs, allowing them to deflate. Clearing the Air The respiratory system has built-in methods to prevent harmful substances in the air from entering the lungs. Respiratory System Hairs in your nose help filter out large particles. Microscopic hairs, called cilia, are found along your air passages and move in a sweeping motion to keep the air passages clean. But if harmful substances, such as cigarette smoke, are inhaled, the cilia stop functioning properly, causing health problems like bronchitis. Mucus produced by cells in the trachea and bronchial tubes keeps air passages moist and aids in stopping dust, bacteria and viruses, allergy-causing substances, and other substances from entering the lungs. Impurities that do reach the deeper parts of the lungs can often be moved up via mucous and coughed out or swallowed. In the lungs, oxygen and carbon dioxide (a waste product of body processes) are exchanged in the tiny air sacs (alveoli) at the end of the bronchial tubes.
Views: 146661 Science Art
Gas Exchange In Lungs - Adaptations - GCSE Biology
 
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In this video, we will look at gas exchange in lungs and how the body has adapted to complete this function in the most effective way possible. http://imstuck.wix.com/imstuckgcserevision
Know more about Exchange Of Gases. NEET Zoology XI Breathing and Exchange of Gases
 
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Know more about Exchange Of Gases. NEET Zoology XI Breathing and Exchange of Gases Exchange of gases in human lungs and tissues: The air reaches the alveoli of the lungs during the inspiration. The atmospheric air contains: Nitrogen - 78% Oxygen - 21 % Carbon dioxide - 0.03% The interchange of gases in the lungs occurs between the blood of the blood capillaries and the air of the alveoli of the lungs. Gases have some properties which are as follows: Gases always diffuse from an area of higher concentration to the area of lower concentration. During respiration the lungs and the respiratory tract are never empty of air. Instead, there is a tidal volume of air (about 500 ml). The total pressure exerted on the walls of the alveoli by the mixture of gases is the same as atmospheric pressure, 760 mm of Hg (millimeters of mercury). Each gas in the mixture exerts a part of the total pressure proportional to its concentration which is called the partial pressure. Table : Partial Pressure of Respiratory Gases (A) Pulmonary Gas Exchange (Gas Exchange in Lungs between alveoli and deoxygenated blood) Diagrammatic representation of exchange of gases at the alveolus and the body tissues with blood and transport of oxygen and carbon dioxide (B) Gas Exchange in Tissues (between oxygenated blood and tissues) Transport of gases in Blood: Blood carries oxygen from the lungs to the heart and from the heart to various body parts. The blood also brings carbon dioxide from the body parts to the heart and then to the lungs. A. Transport of Oxygen: As dissolved gas: About 3% of oxygen in the blood is dissolved in the plasma which carries oxygen to the body cells. As oxyhaemoglobin: About 97% of oxygen is carried in combination with haemoglobin of the erythrocytes. Bohr’s Effect : The relationship between the pCO2 and the percentage saturation of Hb with O2 (or affinity of Hb for O2) is known as Bohr’s effect. increase in pCO2 decrease affinity of Hb for O2 therefore promotes dissociation of Hb(O2)4 → Hb + 4O2.Ø decrease in pCO2 increase affinity of Hb for O2 therefore stimulates association of O2. Hb+ 4O2 → Hb + 4(O2)4. A Diagram of a section of an alveolus with a pulmonary capillary For more such resources go to https://goo.gl/Eh96EY Website: https://www.learnpedia.in/
Views: 7016 Learnpedia
Lung Anatomy and Physiology | Gas Exchange in the Lungs Respiration Transport Alveoli Nursing
 
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Lung anatomy and physiology of gas exchange in the lung alveoli during respiration nursing lecture. This lecture details the anatomy of the lungs and how gas exchange in the lungs takes place between carbon dioxide and oxygen. The lung is made up of many components that participant in gas exchange. Inhaled air with oxygen enters into the upper respiratory system via the nose or mouth then through the nasal cavities, larynx, and trachea which splits at the carina into the right and left bronchus (primary bronchi). The primary bronchi and pulmonary vein and artery enter into the lungs at the hilum. The pulmonary artery delivers unoxygenated blood to the lungs, and the pulmonary vein delivers oxygenated blood back to the heart. The primary bronchi branches off into the lobar bronchi (also called secondary bronchi) then into the segmental bronchi (also called tetiary bronchi), and then into even smaller areas such as the bronchioles. The bronchioles connect to the alveolar sacs via the alveolar ducts. Gas exchange occurs in the alveolar sac within the alveoli. The alveoli sacs contain capillaries that help with transporting carbon dioxide and oxygen in and out of the body. The pulmonary artery brings unoxygenated blood through the capillary and carbon dioxide transports across the thin capillary wall and is transported out of the body through exhalation. Then the inhaled oxygen transports across the capillary wall onto the red blood cells which is taken via the pulmonary vein back to the heart to replenish the body with fresh oxygenated blood. Other facts about lung anatomy: the right lung has three lobes while the left lung has two lobes. The lung is made up of two layers: visceral pleura (surrounds the lungs) and parietal pleura (attaches to the thoracic cavity). In between these layers, is a small space of fluid that allows the lungs to glide on each other during inhalation and exhalation. Lung A & P quiz: http://www.registerednursern.com/lung-anatomy-and-physiology-quiz/ Notes: http://www.registerednursern.com/lung-anatomy-and-physiology-review-notes/ Respiratory Nursing Lectures: https://www.youtube.com/playlist?list=PLQrdx7rRsKfXxyukzyHpqYrJntLbv0aGE Subscribe: http://www.youtube.com/subscription_center?add_user=registerednursern Nursing School Supplies: http://www.registerednursern.com/the-ultimate-list-of-nursing-medical-supplies-and-items-a-new-nurse-student-nurse-needs-to-buy/ Nursing Job Search: http://www.registerednursern.com/nursing-career-help/ Visit our website RegisteredNurseRN.com for free quizzes, nursing care plans, salary information, job search, and much more: http://www.registerednursern.com Check out other Videos: https://www.youtube.com/user/RegisteredNurseRN/videos Popular Playlists: NCLEX Reviews: https://www.youtube.com/playlist?list=PLQrdx7rRsKfWtwCDmLHyX2UeHofCIcgo0 Fluid & Electrolytes: https://www.youtube.com/playlist?list=PLQrdx7rRsKfWJSZ9pL8L3Q1dzdlxUzeKv Nursing Skills: https://www.youtube.com/playlist?list=PLQrdx7rRsKfUhd_qQYEbp0Eab3uUKhgKb Nursing School Study Tips: https://www.youtube.com/playlist?list=PLQrdx7rRsKfWBO40qeDmmaMwMHJEWc9Ms Nursing School Tips & Questions" https://www.youtube.com/playlist?list=PLQrdx7rRsKfVQok-t1X5ZMGgQr3IMBY9M Teaching Tutorials: https://www.youtube.com/playlist?list=PLQrdx7rRsKfUkW_DpJekN_Y0lFkVNFyVF Types of Nursing Specialties: https://www.youtube.com/playlist?list=PLQrdx7rRsKfW8dRD72gUFa5W7XdfoxArp Healthcare Salary Information: https://www.youtube.com/playlist?list=PLQrdx7rRsKfVN0vmEP59Tx2bIaB_3Qhdh New Nurse Tips: https://www.youtube.com/playlist?list=PLQrdx7rRsKfVTqH6LIoAD2zROuzX9GXZy Nursing Career Help: https://www.youtube.com/playlist?list=PLQrdx7rRsKfVXjptWyvj2sx1k1587B_pj EKG Teaching Tutorials: https://www.youtube.com/playlist?list=PLQrdx7rRsKfU-A9UTclI0tOYrNJ1N5SNt Personality Types: https://www.youtube.com/playlist?list=PLQrdx7rRsKfU0qHnOjj2jf4Hw8aJaxbtm Dosage & Calculations for Nurses: https://www.youtube.com/playlist?list=PLQrdx7rRsKfUYdl0TZQ0Tc2-hLlXlHNXq Diabetes Health Managment: https://www.youtube.com/playlist?list=PLQrdx7rRsKfXtEx17D7zC1efmWIX-iIs9
Views: 94299 RegisteredNurseRN
Alveolar Structure and Gas Exchange
 
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Donate here: http://www.aklectures.com/donate.php Website video link: http://www.aklectures.com/lecture/alveolar-structure-and-gas-exchange Facebook link: https://www.facebook.com/aklectures Website link: http://www.aklectures.com
Views: 58353 AK LECTURES
Biology Help: The Respiratory System - Gas Exchange In The Alveoli Explained In 2 Minutes!!
 
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Check out the following links below! Over 1000+ Medical Questions: http://www.5minuteschool.com DONATE + SUPPORT US: http://paypal.me/5minuteschool Patreon: https://goo.gl/w841fz Follow us on Twitter: http://twitter.com/5MinuteSchool Follow us on Instagram: http://instagram.com/5minuteschool My personal Instagram: http://instagram.com/shahzaebb Contact us: [email protected] ______ ◅ Donate: http://www.5minuteschool.com/donate ◅ Website: htttp://www.5minuteschool.com ◅ Twitter: http://www.twitter.com/5minuteschool ◅ Facebook: http://www.facebook.com/5minuteschool ◅ Email: [email protected] A very fast explanation of the process of Gas Exchange in the Alveoli
Views: 58840 5MinuteSchool
gas exchange in the lungs
 
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A mainly audio discription of gas exchange and gas exchange surfaces, focussing on the lungs. Perfect to download and listen 2!!
Views: 57146 SHSscience
Transport of Oxygen in Lung and Tissue
 
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DeltaStep is a social initiative by graduates of IIM-Ahmedabad, IIM-Bangalore, IIT-Kharagpur, ISI-Kolkata, Columbia University (USA), NTU (Singapore) and other leading institutes. At DeltaStep, we understand that just like every child has a unique face, a unique fingerprint; he has a unique learning ability as well. Hence we have built an intelligent adaptive learning system that delivers a tailor-made learning solution and helps a student to learn at his own pace because when it comes to learning, one size does not fit all. Learn from 1000s of such interesting videos, practice from more than 1,00,000 questions, learn complex concepts through games, take timed tests, get detailed reports & in-depth analysis even via SMS and Whatsapp and many more amazing features. Class wise mapping available for all leading boards including ICSE and CBSE. Create your personal learning account. Register for FREE at www.deltastep.com.
Views: 13298 DeltaStep
The lungs and pulmonary system | Health & Medicine | Khan Academy
 
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The pulmonary system including the lungs, larynx, trachea, bronchi, bronchioles, alveoli and thoracic diaphragm. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/science/health-and-medicine/respiratory-system/gas-exchange-jv/v/alveolar-gas-equation-part-1?utm_source=YT&utm_medium=Desc&utm_campaign=healthandmedicine Missed the previous lesson? https://www.khanacademy.org/science/health-and-medicine/respiratory-system/respiratory-system-introduction/v/thermoregulation-in-the-lungs?utm_source=YT&utm_medium=Desc&utm_campaign=healthandmedicine Health & Medicine on Khan Academy: No organ quite symbolizes love like the heart. One reason may be that your heart helps you live, by moving ~5 liters (1.3 gallons) of blood through almost 100,000 kilometers (62,000 miles) of blood vessels every single minute! It has to do this all day, everyday, without ever taking a vacation! Now that is true love. Learn about how the heart works, how blood flows through the heart, where the blood goes after it leaves the heart, and what your heart is doing when it makes the sound “Lub Dub.” About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software, deep data analytics and intuitive user interfaces to help students and teachers around the world. Our resources cover preschool through early college education, including math, biology, chemistry, physics, economics, finance, history, grammar and more. We offer free personalized SAT test prep in partnership with the test developer, the College Board. Khan Academy has been translated into dozens of languages, and 100 million people use our platform worldwide every year. For more information, visit www.khanacademy.org, join us on Facebook or follow us on Twitter at @khanacademy. And remember, you can learn anything. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Health & Medicine channel: https://www.youtube.com/channel/UC1RAowgA3q8Gl7exSWJuDEw?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Views: 1185748 Khan Academy
Alveolar gas equation - part 1 | Respiratory system physiology | NCLEX-RN | Khan Academy
 
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Find out how to calculate exactly how much oxygen is deep down inside your lungs! Rishi is a pediatric infectious disease physician and works at Khan Academy. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. Created by Rishi Desai. Watch the next lesson: https://www.khanacademy.org/test-prep/nclex-rn/rn-respiratory-system/gas-exchange-pf/v/alveolar-gas-equation-part-2?utm_source=YT&utm_medium=Desc&utm_campaign=Nclex-rn Missed the previous lesson? https://www.khanacademy.org/test-prep/nclex-rn/rn-respiratory-system/rn-the-respiratory-system/v/thermoregulation-in-the-lungs?utm_source=YT&utm_medium=Desc&utm_campaign=Nclex-rn NCLEX-RN on Khan Academy: A collection of questions from content covered on the NCLEX-RN. These questions are available under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 United States License (available at http://creativecommons.org/licenses/by-nc-sa/3.0/us/). About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s NCLEX-RN channel: https://www.youtube.com/channel/UCDx5cTeADCvKWgF9x_Qjz3g?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Views: 149939 khanacademymedicine
Mechanism of Breathing, Animation
 
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Physiology of breathing (pulmonary ventilation): air pressure basics, inspiration and expiration cycle, deep breathing, resistance to airflow, lung compliance, elasticity. Support us on Patreon and get FREE downloads and other great rewards: patreon.com/AlilaMedicalMedia This video and other related images/videos (in HD) are available for instant download licensing here : https://www.alilamedicalmedia.com/-/galleries/images-videos-by-medical-specialties/pulmonology ©Alila Medical Media. All rights reserved. Voice by: Ashley Ottesen All images/videos by Alila Medical Media are for information purposes ONLY and are NOT intended to replace professional medical advice, diagnosis or treatment. Always seek the advice of a qualified healthcare provider with any questions you may have regarding a medical condition. Pulmonary ventilation, commonly referred to as breathing, is the process of air flowing IN and OUT of the lungs during INspiration and EXpiration. The air movements are governed by the principles of gas laws. Basically: - air flows from HIGHER to LOWER pressure; - pressure within a cavity INcreases when its volume DEcreases, and vice versa; - volume of a given amount of gas INcreases with INcreased temperature. At rest, in between breaths, the pressure inside the lungs, or intrapulmonary pressure, EQUALS the pressure outside the body, or atmospheric pressure. When discussing respiratory pressures, this is generally referred to as a RELATIVE pressure of ZERO. This is because what matters is the DIFFERENCE between the two pressures, NOT their absolute values. Thus, a NEGATIVE pressure is a pressure BELOW atmospheric, while a POSITIVE pressure is ABOVE atmospheric. The lungs are covered in a double-layer membrane, which forms a THIN space surrounding the lungs, called the PLEURAL cavity. The pressure within the pleural cavity, or intrapleural pressure, is normally negative. This negative pressure acts like a SUCTION to keep the lungs inflated. If this becomes zero, such as in the case of pneumothorax, when the chest wall is punctured and the pleural cavity has the same pressure as the outside air, the lung would COLLAPSE. Pulmonary ventilation is achieved by rhythmically changing the volume of the thoracic cavity. During inspiration, the diaphragm and the external intercostal muscles contract, expanding the thoracic cavity and the lungs. This INcrease in volume results in a DEcrease in pressure, causing outside air to flow IN. Another factor that helps to inflate the lungs is the warming of the inhaled air. This effect is most notable on a cool day, when the temperature outside is significantly lower, the inhaled air INcreases in volume as it warms up inside the body and inflates the lungs, FURTHER facilitating inhalation. While inspiration requires muscular contraction and hence energy expenditure, expiration during quiet breathing is a PASSIVE process. As the diaphragm returns to its original position and the muscles relax, thoracic and lung volumes DEcrease and pressures INcrease, pushing air OUT of the lungs. Quiet expiration relies therefore on the ELASTICITY of the lungs and rib cage - their ability to SPRING BACK to the original dimensions. Conditions that REDUCE pulmonary elasticity, such as emphysema, can cause difficulty EXhaling. Deep breathing requires more forceful contractions of the diaphragm, intercostal muscles, and involves ADDITIONAL muscles to produce LARGER changes in the thoracic volume. DEEP expiration, unlike quiet expiration, is an active process. Another factor that affects ventilation is the RESISTANCE to airflow, which exists within the lung tissues and in the airways. Lung COMPLIANCE refers to the EASE with which the lungs EXPAND. Healthy lungs normally have HIGH compliance, LOW resistance, like a THIN balloon, easy to inflate. Lung compliance is REDUCED when the lungs become “STIFF”, in conditions that cause scarring of lung tissues, or fibrosis. In this case the lung turns into a THICK balloon, harder to inflate. Diseases that NARROW the airways, such as asthma, INcrease resistance, making it harder to breathe. The airways may also DILATE or CONSTRICT in response to various factors. For example, parasympathetic stimulation and histamine typically narrow the bronchioles, INcrease resistance and DEcrease airflow; while epinephrine, a hormone released during exercises, dilates bronchioles and thereby INcreases airflow.
Views: 34280 Alila Medical Media
What do the lungs do? - Emma Bryce
 
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View full lesson: http://ed.ted.com/lessons/what-do-the-lungs-do-emma-bryce When you breathe, you transport oxygen to the body’s cells to keep them working, while also clearing your system of the carbon dioxide that this work generates. How do we accomplish this crucial and complex task without even thinking about it? Emma Bryce takes us into the lungs to investigate how they help keep us alive. Lesson by Emma Bryce, animation by Andrew Zimbelman for The Foreign Correspondents' Club.
Views: 846711 TED-Ed
Gas Exchange System Respiratory
 
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gas exchange system repiratory Oxygen and carbon dioxide diffuse between the alveoli and pulmonary capillaries in the lungs, and between the systemic capillaries and cells throughtout the body. The diffusion of these gases, moving in opposite directions, is called gas exchange Other video about System Respiratory Control of Respiration System Respiratory http://www.youtube.com/watch?v=_lHOQyvWmnw Gas Transport System Respiratory http://www.youtube.com/watch?v=HsiwGWef2dU Pulmonary Ventilation System Respiratory http://www.youtube.com/watch?v=554DUkghvys Anatomy Respiratory System http://www.youtube.com/watch?v=567QZL5z69k Translated titles: Gasaustauschsystem respiratorisch गैस एक्सचेंज सिस्टम श्वसन Gas uitruilstelsel respiratoriese Gas exchange system respiratory 가스 교환 시스템 호흡기 Sistema de intercambio de gases respiratorio نظام صرف الغاز التنفسي গ্যাস বিনিময় ব্যবস্থা শ্বাসযন্ত্র ग्याँस एक्सचेंज प्रणाली श्वसन گیس ایکسچینج سسٹم تنفس
Views: 9181 Human Physiology
Systemic and Pulmonary Gas Exchange
 
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A description of gas exchange in the systemic capillaries and pulmonary capillaries, including an explanation of the chloride shift.
Alveoli and Gas Exchange Investigations - GCSE Biology (9-1)
 
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This video covers the following syllabus objectives from Edexcel IGCSE Biology 9-1 2.48 Explain how alveoli are adapted for gas exchange by diffusion between air in the lungs and blood in capillaries. 2.50 Practical: investigate breathing in humans, including the release of carbon dioxide and the effect of exercise. For a PowerPoint on this topic visit www.mrexham.com
Views: 143 MrExham
Respiratory System | The Dr. Binocs Show | Learn Videos For Kids
 
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Hey Kids, have you ever wondered what happens after we breathe? How does the air travel inside our body? Well, Dr. Binocs is here to explain it all in today's topic, Respiratory System. The detailed video break-up is given below 00:45 – Role of Oxygen 01:57 – Function of Lungs 03:08 – Trivia time Voice Over Artist - Joseph D'Souza Script Writer & Director - Sreejoni Nag Visual Artist - Pranav Korla Illustrators - Aashka Shah, Pranav Korla Animators - Tushar Ishi, Chandrashekhar Aher VFX Artist - Kushal Bhujbal Background Score - Jay Rajesh Arya Sound Engineer - Mayur Bakshi Creative Head - Sreejoni Nag Producer: Rajjat A. Barjatya Copyrights and Publishing: Rajshri Entertainment Private Limited All rights reserved. Share on Facebook - https://goo.gl/Jp0MCS Tweet about this - https://goo.gl/NcxLZ3 Catch Dr.Binocs At - https://goo.gl/SXhLmc To Watch More Popular Nursery Rhymes Go To - https://goo.gl/CV0Xoo To Watch Alphabet Rhymes Go To - https://goo.gl/qmIRLv To Watch Compilations Go To - https://goo.gl/nW3kw9 Catch More Lyricals At - https://goo.gl/A7kEmO Subscribe to Peekaboo Kidz: http://bit.ly/peekabookidz Like our Facebook page: https://www.facebook.com/peekabootv
Views: 1078740 Peekaboo Kidz
The Respiratory System
 
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Go inside the human body and see first-hand how the respiratory system works. Vivid animation and real-life examples demonstrate the respiration process, including the transfer of oxygen into the bloodstream and the effect of exercise on the respiratory system. From the Australian educational program 'The Body in Motion: An Introduction', Classroom Video, 2010.
Views: 3115335 EducationWithVision
Breathing and exchanges of gases
 
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Follow us at: https://plus.google.com/+tutorvista/ Check us out at http://www.tutorvista.com/content/biology/biology-ii/respiration/huan-beings-gaseous-exchange.php Gas Exchange Respiratory System Breathing consists of two phases, inspiration and expiration. During inspiration, the diaphragm and the intercostal muscles contract. The diaphragm moves downwards increasing the volume of the thoracic (chest) cavity, and the intercostal muscles pull the ribs up expanding the rib cage and further increasing this volume. This increase of volume lowers the air pressure in the alveoli to below atmospheric pressure. Because air always flows from a region of high pressure to a region of lower pressure, it rushes in through the respiratory tract and into the alveoli. This is called negative pressure breathing, changing the pressure inside thelunsg relative to the pressure of the outside atmosphere. In contrast to inspiration, during expiration the diaphragm and intercostal muscles relax. This returns the thoracic cavity to it's original volume, increasing the air pressure in the lungs, and forcing the air out. Please like our facebook page http://www.facebook.com/tutorvista
Views: 44519 TutorVista
Respiratory System - Introduction | Biology for All | FuseSchool
 
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Your respiratory system is a system in humans that is designed to extract oxygen from the air so we can use it in respiration around the body and at the same time get rid of carbon dioxide gas into the air which is the waste product from respiration. oxygen gas travels through the respiratory system, as you inhale, the molecule is drawn in through the mouth or the nose, it goes into the back of the throat where it enters a tube called the trachea. The tractor or windpipe has special rings of cartilage to keep it open at all times so you can breathe if you are lying down asleep or on a trampoline. The oxygen molecule now travels down the trachea and they will go into either the left or the right lung via a tube called the bronchus. This bronchus then splits into smaller tubes called bronchioles and finally the oxygen molecule will make its way into a tiny air sac called an alveolar, these alveoli are surrounded by tiny blood vessels called capillaries and the oxygen molecule now passes across from the air into the blood via a process of diffusion. At the same time the carbon dioxide molecule goes the other way coming out of the blood and into the alveoli as you exhale. As you exhale the carbon dioxide will take the journey back up the bronchioles a bronchus the trachea and out of the mouth. This happens to millions of molecules with each breath have about 300 million alveoli in each lung. On average, you breathe like this 12 to 16 times a minute. Unlike your digestive system the respiratory system is a dead end. If something bad gets into your lungs it's very hard to get it back out. As usual the body has an answer to look very closely at the cells lining the tracker and the bronchi some of them have tiny little hairs on called cilia and in between these cells are other cells called goblet cells that are secreting mucus. This mucus traps dirt dust and bacteria before entered the lungs. The cilia then what this mucus up into the mouth where it can be swallowed to be killed by your stomach acid. There are many things that can go wrong with your lungs such as asthma, pneumonia and diseases associated with smoking such as emphysema and chronic bronchitis. However, if you have a problem a doctor may perform a bronchoscopy. This is when they put a tube with a light and the camera on it into your Airways and look for signs of inflammation or bleeding. SUBSCRIBE to the FuseSchool YouTube channel for many more educational videos. Our teachers and animators come together to make fun & easy-to-understand videos in Chemistry, Biology, Physics, Maths & ICT. VISIT us at www.fuseschool.org, where all of our videos are carefully organised into topics and specific orders, and to see what else we have on offer. Comment, like and share with other learners. You can both ask and answer questions, and teachers will get back to you. These videos can be used in a flipped classroom model or as a revision aid. Find all of our Chemistry videos here: https://www.youtube.com/watch?v=cRnpKjHpFyg&list=PLW0gavSzhMlReKGMVfUt6YuNQsO0bqSMV Find all of our Biology videos here: https://www.youtube.com/watch?v=tjkHzEVcyrE&list=PLW0gavSzhMlQYSpKryVcEr3ERup5SxHl0 Find all of our Maths videos here: https://www.youtube.com/watch?v=hJq_cdz_L00&list=PLW0gavSzhMlTyWKCgW1616v3fIywogoZQ Twitter: https://twitter.com/fuseSchool Access a deeper Learning Experience in the FuseSchool platform and app: www.fuseschool.org Follow us: http://www.youtube.com/fuseschool Friend us: http://www.facebook.com/fuseschool This Open Educational Resource is free of charge, under a Creative Commons License: Attribution-NonCommercial CC BY-NC ( View License Deed: http://creativecommons.org/licenses/by-nc/4.0/ ). You are allowed to download the video for nonprofit, educational use. If you would like to modify the video, please contact us: [email protected]
Pulmonary Gas Pressures
 
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Partial pressures of gases in the atmosphere, alveoli, and blood stream. What partial pressures mean, and how gases diffuse into and are carried by the blood stream.
Views: 29237 Andrew Wolf
Gas Exchange During Respiration
 
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Thanks to McGraw Hill you can watch and learn about gas exchange during respiration!
Views: 205539 lovexconquersx
Respiratory System Song
 
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Here is a song I created to help my 6th grade students study. I hope you enjoy. Each day I'm breathing air in, I'm breathing air in The air is sucked through nose and mouth Mucus it warms and moistens, it warms and moistens The trachea the air goes down Yeah, the trachea divides in two Both primary bronchus too And you know it do, know it do Yeah, branch off tertiary too And then branching narrow tubes, bronchioles Let's go respiratory system is made of your lungs And passages that lead them oxygen to blood It travels round your body organs, everyone Breathe out gas carbon And these are the lungs Oh... Oh... And these are the lungs Oh... That's right it's the lungs Respiratory system Each bronchiole's a cluster, an air sac cluster Capillaries they do engulf Oxygen through alveoli to capillaries Internal respiration's done Get out carbon dioxide removed Body breathing out for you, make it right Let's go respiratory system is made of your lungs And passages that lead them oxygen to blood It travels round your body organs, everyone Breathe out gas carbon And these are the lungs Oh... Oh... And these are the lungs Oh... That's right it's the lungs Respiratory system Ventilation, that is right, diaphragm flattens, it rises for life The respiratory system The respiratory system Let's go respiratory system is made of your lungs And passages that lead them oxygen to blood It travels round your body organs, everyone Breathe out gas carbon And these are the lungs Respiratory system is made of your lungs And passages that lead them oxygen to blood It travels round your body organs, everyone Breathe out gas carbon And these are the lungs Respiratory, respiratory, respiratory system Respiratory, respiratory, respiratory system Respiratory, respiratory, respiratory system That's right it's the lungs Respiratory system
Views: 924588 ParrMr
MECHANISM OF BREATHING PART 01
 
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For more information: http://www.7activestudio.com [email protected] http://www.7activemedical.com/ [email protected] http://www.sciencetuts.com/ [email protected] Contact: +91- 9700061777, +91- 9100061777 7 Active Technology Solutions Pvt.Ltd. is an educational 3D digital content provider for K-12. We also customise the content as per your requirement for companies platform providers colleges etc . 7 Active driving force "The Joy of Happy Learning" -- is what makes difference from other digital content providers. We consider Student needs, Lecturer needs and College needs in designing the 3D & 2D Animated Video Lectures. We are carrying a huge 3D Digital Library ready to use. BREATHING AND EXCHANGE OF GASES:MECHANISM OF BREATHING:-Respiration occurs in 2 stages. 1 Inspiration: during which atmospheric air is drawn in and 2 Expiration: in which the alveolar air is released out The movement of air into and out of the lungs is carried out by creating a pressure gradient between the lungs and the atmosphere. When the air pressure within the alveolar spaces falls below atmospheric pressure, air enters the lungs, resulting in inspiration there is a negative pressure in the lungs with respect to atmospheric pressure, provided the larynx is open. Similarly expiration takes place when the air pressure within the alveoli exceeds atmospheric pressure; air is blown from the lungs. The flow of air is rapid or slow in proportion to the magnitude of the pressure difference because atmospheric pressure remains relatively constant, flow is determined by how much above or below atmospheric pressure, the pressure within the lungs rises or falls. Alveolar fluctuations are caused by expansion and contraction of lungs resulting from tensing and relaxing of the muscles internal intercostals muscles between ribs diaphragm. Inspiration is initiated by the contraction of diaphragm which increases the volume of thoracic chamber in the antero -- posterior axis the contraction of external intercostals muscles lifts up the ribs and sternum causing an increase in the volume of thoracic chamber in the dorso ventral axis.
Views: 157853 7activestudio
Trick to learn pulmonary volumes for NEET,AIIMS,JIPMER,KVPY, IIT JAM BL/BT etc. Biology exams .
 
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U can contact me on my facebook page ie. Biology at your fingertips for more information regarding any national level examination in which biology is a part . Like this video , share it with your frnds n do subscribe to my channel if u r new . Thanq .👍😊
Gas exchange in the blood during external respiration
 
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Animation of oxygen and carbon transfer between the air in the lungs and blood during external respiration
Views: 75068 geneedinc
Asthma (2) -- Gas Exchange
 
00:24
Showing impaired exhalation, and air trapping in bronchiole cross section Contact: [email protected]
Views: 1341 CCHMCMediaLab
IGCSE. 2.8.  Human respiratory system
 
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What are lungs? What are the different parts of the respiratory system? nose and mouth trachea and larynx bronchi and bronchioles alveoli How is air cleaned? How are alveoli adapted to gaseous exchange? What is the structure of an alveolus?
Exchange of gases in the lungs
 
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I know its boring but I'm hoping I can help people learn by reading out the pages of the books about whatever! So I chose this one first and just comment below for another one you may want me to read out! :D Also this is on the AQA specification. B3 and B2 sections :) Also its a good thing to convert to an MP3 and have on your ipod for a week until the exam for when you're on the bus or something "/
Views: 47907 TheGvg96
GCSE BBC Science Bitesize - Breathing
 
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This GCSE BBC Bitesize video is from the original programmes from 2000 that were broadcast on BBC2. It covers the areas of the Biology foundation paper. Select the, "more from," or type jamjarmmx into your search for the other Biology clips as well as the Physics and Chemistry clips. The Higher clips are also available from this channel. The whole Science GCSE syllabus for Core and Additional Science can be found on this channel.
Views: 89782 JamJarMMX
How the Body Works : The Exchange of Gases
 
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The Exchange of Gases As air is breathed into the lungs, exchange of gases takes place at the highly folded, moist surface of air sacs. These are richly supplied with blood capillaries, which take up oxygen and give up carbon dioxide.
Views: 70224 Daniel Izzo
Respiratory | Surface Tension & Surfactant in Alveoli
 
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Ninja nerds, In this video we discuss the significance of the air-water interaction in the alveoli of the lungs. We talk about how this air-water interaction increases the tension within the alveolar walls, increasing the collapsing pressure of the alveoli. We also discuss Laplace's law and show a diagram of the histology of the alveoli. In addition, we talk about surfactant and its function to naturally act to decrease surface tension. In the presence of a pathology, when surface tension is high and surfactant production is low, this can lead to infant respiratory distress syndrome, which is described in this video. ***PLEASE SUPPORT US*** PATREON | https://www.patreon.com/NinjaNerdScience ***EVERY DOLLAR HELPS US GROW & IMPROVE OUR QUALITY*** FACEBOOK | https://www.facebook.com/NinjaNerdScience INSTAGRAM | https://www.instagram.com/ninjanerdscience/ ✎ For general inquiries email us at: [email protected]
Views: 21436 Ninja Nerd Science
Respiratory System Made Easy
 
12:07
Respiratory System Made Easy LIKE US ON FACEBOOK : fb.me/Medsimplified Human respiratory system, the system in humans that takes up oxygen and expels carbon dioxide. The respiratory tract conveys air from the mouth and nose to the lungs, where the gases oxygen and carbon dioxide are exchanged between the alveoli and the capillaries. The respiratory tract conveys air from the mouth and nose to the lungs, where the gases oxygen and … The human gas-exchanging organ, the lung, is located in the thorax, where its delicate tissues are protected by the bony and muscular thoracic cage. The lung provides the tissues of the human body with a continuous flow of oxygen and clears the blood of the gaseous waste product, carbon dioxide. Atmospheric air is pumped in and out regularly through a system of pipes, called conducting airways, which join the gas-exchange region with the outside of the body. The airways can be divided into upper and lower airway systems. The transition between the two systems is located where the pathways of the respiratory and digestive systems cross, just at the top of the larynx. The upper airway system comprises the nose and the paranasal cavities (or sinuses), the pharynx (or throat), and partly also the oral cavity, since it may be used for breathing. The lower airway system consists of the larynx, the trachea, the stem bronchi, and all the airways ramifying intensively within the lungs, such as the intrapulmonary bronchi, the bronchioles, and the alveolar ducts. For respiration, the collaboration of other organ systems is clearly essential. The diaphragm, as the main respiratory muscle, and the intercostal muscles of the chest wall play an essential role by generating, under the control of the central nervous system, the pumping action on the lung. The muscles expand and contract the internal space of the thorax, the bony framework of which is formed by the ribs and the thoracic vertebrae. The contribution of the lung and chest wall (ribs and muscles) to respiration is described below in The mechanics of breathing. The blood, as a carrier for the gases, and the circulatory system (i.e., the heart and the blood vessels) are mandatory elements of a working respiratory system (see blood; cardiovascular system). Watch Again: https://youtu.be/zd_e9gtDExM Subscribe: https://www.youtube.com/channel/UCOmrniWfKi-uCD6Oh6fqhgw -~-~~-~~~-~~-~- CHECK OUT NEWEST VIDEO: "Nucleic acids - DNA and RNA structure " https://www.youtube.com/watch?v=0lZRAShqft0 -~-~~-~~~-~~-~-
Views: 175880 MEDSimplified
Respiratory System 2, Breathing and ventilation
 
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Skeletal structures associated with ventilation The lungs are surrounded with bones which provide protection against damage from outside trauma. Protection from the back is provided by the thoracic vertebral column. The breast bone or sternum is the flat bone in front of the chest. There are twelve pairs of ribs which form a cage like structure around the lungs, the first ten pairs of which are connected to the sternum via costal cartilage (costal means to do with ribs). Of course men and women both have the same number of ribs. In addition to protection the bony structures are also essential to facilitate the mechanical process of breathing. Muscles associated with ventilation The diaphragm is a sheet of skeletal muscle which divides the thoracic and abdominal cavities. When the muscle of the diaphragm is at rest the structure is domed upwards. Contraction causes it to flatten downwards. The ribs are joined together by sheets of intercostal muscles which follow the line of the ribs around the chest. These are the muscles you eat if you have barbecue spare ribs. There are two sets of intercostal muscles, the external and internal. The diaphragm and the intercostal muscles are referred to as the primary respiratory muscles. In addition there are some accessory muscles which are attached to the sternum and upper ribs and start to aid the expansion of the thorax during more vigorous respiratory activity. Inspiration To facilitate inspiration the diaphragm contracts, causing it to move down and flatten. At the same time the external intercostal muscles pull the rib cage up and out. Both of these movements result in an increase in the volume of the thoracic cavity. Because the volume of the thorax is increased the pressure of air left inside the thorax, in the lungs, is reduced. Gases will always move from areas of high pressure to areas of lower pressure. As there is a pressure reduction in the thorax, air moves in from the outside to equalise the pressures between the atmosphere and the reduced pressure inside the lungs. So in inspiration when air moves into the lungs the process is one of negative pressure ventilation. This is in contrast to artificial ventilation when air is actively blown into the lungs in the process of positive pressure ventilation. The increase in the volume of air in the lungs stretches the elastic tissues and smooth muscle associated with the walls of the bronchioles and alveoli. This is analogous to blowing up a balloon. Expiration During expiration, the smooth muscle and elastic tissue in the walls of the bronchioles and alveoli recoil. This reduces the volume of these structures and so increases the pressure of the air they contain. This is analogous to releasing the pressure on the neck of a balloon; as the elastic walls of the balloon recoil the pressure is increased so air is blown out. As a result of these elastic properties the lungs will passively recoil facilitating expiration. This increases the air pressure in the lungs as a whole, and air is blown out. To assist this process the diaphragm relaxes and so moves up. The external intercostal muscles also relax which allows the ribs to fall down and in. The movement of the diaphragm up, and the ribs down and in, reduces the volume of the thoracic cavity. Because the volume is reduced the pressure will be increased. This means the pressure inside the lungs is now greater than in the external atmosphere so air will be blown out of the lungs. From this it can be seen that, while inspiration is an active muscular process, expiration is a passive You can support the work of campbellteaching, at no cost whatsoever to yourself, if you use the link below as your bookmark to access Amazon. Thank you. If in the US use this link http://goo.gl/mDMfj5 If in the UK use this link http://goo.gl/j0htQ5
Views: 49047 Dr. John Campbell

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