NUTRITION
THE HUMAN BODY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The adaptations of alveolar to
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Increase efficiency
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Maximise exchange of gas
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Decrease efficiency
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Minimise exchange of gas
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Explanation:
Detailed explanation-1: -Moist walls-gases dissolve in the moisture helping them to pass across the gas exchange surface. Permeable walls-allow gases to pass through. Extensive blood supply-ensuring oxygen rich blood is taken away from the lungs and carbon dioxide rich blood is taken to the lungs.
Detailed explanation-2: -Broad surface area-there are several alveoli in the lungs with a form that raises the surface area more. A wide diffusion gradient means that the concentration of oxygen in the alveoli is greater than in the capillaries, meaning that oxygen is transported from the alveoli to the blood.
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