Lungs are made up of air-filled sacs, the alveoli. They do not collaps

1.	Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of (a) Residual Volume (RV) (b) Inspiratory Reserve Volume (IRV) (c) Tidal Volume (TV) (d) Expiratory Reserve Volume (ERV)
Answer» Correct option is (a) Residual Volume (RV) In lungs, even after the most forceful expiration, some of the volume of air remains. This volume is termed Residual Volume (RV). Due to this, lungs do not collapse even after the most forceful expiration. RV is about 1100-1200 ml.

Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of (a) Residual Volume (RV) (b) Inspiratory Reserve Volume (IRV) (c) Tidal Volume (TV) (d) Expiratory Reserve Volume (ERV)

Answer»

Correct option is (a) Residual Volume (RV)

In lungs, even after the most forceful expiration, some of the volume of air remains. This volume is termed Residual Volume (RV). Due to this, lungs do not collapse even after the most forceful expiration. RV is about 1100-1200 ml.

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Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of (a) Residual Volume (RV) (b) Inspiratory Reserve Volume (IRV) (c) Tidal Volume (TV) (d) Expiratory Reserve Volume (ERV)

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