What is alveolar airand what is its CO2 content
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Alveolar air : the respiratory gases in an alveolus of the lung. Alveolar air can be analyzed for its content of oxygen, carbon dioxide, or other gases by collecting the last portion of airexpelled by maximum exhalation. Also called alveolar gas.
Air at sea level contains about 79 percent nitrogen and 21 percent oxygen. Very little carbon dioxide is present — only about 0.04 percent. As the body needs to take in oxygen and exhale carbon dioxide, however, exhaled air has a different composition.
Air at sea level contains about 79 percent nitrogen and 21 percent oxygen. Very little carbon dioxide is present — only about 0.04 percent. As the body needs to take in oxygen and exhale carbon dioxide, however, exhaled air has a different composition.
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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. ... Then the blood is pumped through the pulmonary artery to the lungs, where it picks up oxygen and releases carbon dioxide.
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