Question

why do gaseous exchange continues in the lungs ever after expiration?

Answer 1

The air inside the lungs is never replaced completely.1500ml of air is always present in lungs.Thus,gaseous xchange takes place even after expiration

Answer 2

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ANSWER :

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In lungs , gaseous exchange continues even after forceful expiration as the lungs never become empty.There is always some amount of air left in the lungs which is known as residual volume.

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