https://wikimd.org/index.php?action=history&feed=atom&title=Gas_exchangeGas exchange - Revision history2026-04-24T22:47:39ZRevision history for this page on the wikiMediaWiki 1.44.2https://wikimd.org/index.php?title=Gas_exchange&diff=5463969&oldid=prevKondreddy Naveen at 21:41, 28 March 20242024-03-28T21:41:06Z<p></p>
<p><b>New page</b></p><div>'''Gas exchange''' is the process by which [[oxygen]] is transferred from the [[atmosphere]] to the cells of the body, while [[carbon dioxide]] is expelled from the body to the atmosphere. This process is crucial for [[respiration]], which sustains life and energy production in all organisms.<br />
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[[File:Respiratory system - Gas exchanges 1 -- Smart-Servier.png|thumb|Respiratory system - Gas exchanges ]]<br />
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== Overview ==<br />
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Gas exchange occurs in the [[lungs]] in humans and most animals, and in the [[leaves]] of plants. In the lungs, oxygen is inhaled into the [[alveoli]], tiny sacs surrounded by [[capillaries]], where it binds to [[hemoglobin]] in red blood cells. At the same time, carbon dioxide, a waste product of [[metabolism]], is exhaled.<br />
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[[File:Gas exchange in the aveolus.svg|thumb|Gas_exchange_in_the_aveolus]]<br />
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== Mechanism ==<br />
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The mechanism of gas exchange is governed by the principles of [[diffusion]]. Gases move from an area of high concentration to an area of low concentration. In the lungs, oxygen in the inhaled air moves into the blood in the capillaries, where its concentration is lower. Conversely, carbon dioxide in the blood, where its concentration is higher, moves into the alveoli to be exhaled.<br />
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== Factors affecting gas exchange ==<br />
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Several factors can affect the efficiency of gas exchange, including the concentration of oxygen and carbon dioxide in the air, the volume of air inhaled and exhaled, the rate of [[breathing]], and the health of the lungs and respiratory system.<br />
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== Disorders of gas exchange ==<br />
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Disorders that affect gas exchange can lead to [[hypoxia]], a lack of oxygen in the body, or [[hypercapnia]], an excess of carbon dioxide. These conditions can be caused by lung diseases such as [[chronic obstructive pulmonary disease|COPD]], [[asthma]], and [[pulmonary fibrosis]], as well as conditions that affect the circulatory system, such as [[heart disease]] and [[anemia]].<br />
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== See also ==<br />
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* [[Respiratory system]]<br />
* [[Diffusion]]<br />
* [[Hemoglobin]]<br />
* [[Hypoxia (medical)|Hypoxia]]<br />
* [[Hypercapnia]]<br />
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[[Category:Physiology]]<br />
[[Category:Respiratory system]]<br />
[[Category:Metabolism]]<br />
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