MEDICAL
LUNGS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following are features of the alveoli that adapt them to gas exchange? I. High surface areaII. Thin walls III. Dry surfaces
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I and II only
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I only
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II and III
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I, II, and III
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Explanation:
Detailed explanation-1: -To exchange gases more efficiently the walls of the alveoli are thin which provide a larger surface area to make the exchange of gases properly. Hence, option II is the most appropriate.
Detailed explanation-2: -Alveoli have very thick walls to maximise the distance that gases have to move.
Detailed explanation-3: -They have a large surface area relative to the volume of the organism. They are thin and so have a short diffusion pathway. They have a moist surface where gases can dissolve first before they diffuse in or out. More items
There is 1 question to complete.