Mammalian lungs have an enormous number of minute alveoli (air sacs). – InterviewSolution

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1.	Mammalian lungs have an enormous number of minute alveoli (air sacs). This is to allowA. more surface area for difusion of gasesB. more space for increasing the volume of inspired airC. more nerve supply to keep the lungs workingD. more spongy texture for keeping lung in proper shape.
Answer» Correct Answer - A The numbe of alveoli in the human lungs has been estimated to be approximately `300` million. This cnormous number of alveoli are meant to increase surface area of lungs for diffusion of gases.

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