EMBRYOLOGY
RESPIRATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Small air sacs in the lungs where many capillaries exchange carbon dioxide for oxygen taken into the body.
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Trachea
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Bronchi
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Bronchiole
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Alveoli
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Explanation:
Detailed explanation-1: -Tiny air sacs at the end of the bronchioles (tiny branches of air tubes in the lungs). The alveoli are where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out.
Detailed explanation-2: -Once the venous blood returns to the lungs, the carbon dioxide diffuses out of the bloodstream, through the capillaries, and into the alveoli from where it is expelled, during which time oxygen simultaneously binds with hemoglobin to be carried back to the tissues.
Detailed explanation-3: -Final answer: The capillaries around the air sacs take in oxygen and give off carbon dioxide.
There is 1 question to complete.