NUTRITION
THE HUMAN BODY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the adaptations of alveolar structure
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Thin wall of alveolus and blood capillary
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Moist wall of alveolus
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Large surface area of alveolus
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Alveolus covered by network of capillary
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Explanation:
Detailed explanation-1: -The alveoli present in the lungs have thin walls composed only of a single layer of cells in order to minimize the diffusion distance. Their walls are moist which helps the gases to diffuse better. They are richly supplied with blood capillaries to ensure the efficient exchange of gases with the bloodstream.
Detailed explanation-2: -Alveoli are thin walled and surrounded by blood capillaries for ease of gas exchange via diffusion.
Detailed explanation-3: -They (and the capillaries around them) have thin, single layers of cells to minimise diffusion distance. Ventilation maintains high levels of oxygen and low levels of carbon dioxide in the alveolar air space. More items
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