Give scientific reason:A very large number of alveoli is present in lu – InterviewSolution

InterviewSolution

1.	Give scientific reason:A very large number of alveoli is present in lungs, which are covered over by capillary network.
Answer» Due to very large number of alveoli the surface area of the lungs is increased many a times for the gaseous exchange. The alveoli are covered over by capillary network for rapid gaseous exchange. The oxygen is taken in the body and at the same time carbon dioxide is given out of the body only by the gaseous exchange occurring at the alveolar surface.

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