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

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Q.
Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of [2017]

1 inspiratory reserve volume

2 tidal volume

3 expiratory reserve volume

4 residual volume

Ans.
(4)

Residual volume is the volume of air which remains in the lungs after the most forceful expiration. This residual air enables the lungs to continue exchange of gases even after maximum exhalation. Due to this, lungs do not collapse even after forceful expiration.

Solution

Q.
Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of [2017]

1 inspiratory reserve volume

2 tidal volume

3 expiratory reserve volume

4 residual volume

Ans.
(4)

Residual volume is the volume of air which remains in the lungs after the most forceful expiration. This residual air enables the lungs to continue exchange of gases even after maximum exhalation. Due to this, lungs do not collapse even after forceful expiration.

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Solution

Q. Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of [2017]

1 inspiratory reserve volume

2 tidal volume

3 expiratory reserve volume

4 residual volume

Ans. (4) Residual volume is the volume of air which remains in the lungs after the most forceful expiration. This residual air enables the lungs to continue exchange of gases even after maximum exhalation. Due to this, lungs do not collapse even after forceful expiration.

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Q.
Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of [2017]

Ans.
(4)

Residual volume is the volume of air which remains in the lungs after the most forceful expiration. This residual air enables the lungs to continue exchange of gases even after maximum exhalation. Due to this, lungs do not collapse even after forceful expiration.