PATHOLOGY MCQ
RESPIRATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The small air sacs that are surrounded by blood vessels are the ____
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alveoli
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bronchi
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bronchioles
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trachea
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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: -The capillary network allows efficient gas exchange in tissues since they have a large surface area and they have thin walls.
There is 1 question to complete.