First slide

Mechanism of Breathing

Question

Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of

Moderate

A

inspiratory reserve volume
B

tidal volume
C

expiratory reserve volume
D

residual volume

Solution

Volume of air remaining in the lungs even after a forcible expiration is residual volume. Its presence in the lungs doesn't allow them to collapse even after forceful expiration.

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