RESPIRATORY SYSTEM
BRONCHIOLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following best describes the process of gas exchange in the lungs?
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Air moves in and out of the alveoli during breathing.
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Carbon dioxide diffuses from deoxygenated blood in capillaries into the alveolar air.
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Oxygen and carbon dioxide diffuse down their concentration gradients between blood and alveolar air.
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Oxygen diffuses from alveolar air into deoxygenated blood.
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Explanation:
Detailed explanation-1: -(c) Oxygen and carbon dioxide diffuse down their concentration gradients between blood and alveolar air.
Detailed explanation-2: -Final answer: The process of gaseous exchange in lungs between air and blood is called external respiration.
Detailed explanation-3: -After this, there is an exchange of gases between the lungs and the blood. This is called external respiration. The blood transports the gases to and from the tissue cells. The exchange of gases between the blood and tissue cells is internal respiration.
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