Question

Arrange the following in the order of increasing volume.

(1) Tidal volume

(2) Residual volume

(3) Expiratory reserve volume

(4) Vital capacity

• A. 1<2<3<4
• B. 1<3<2<4
• C. 1<4<3<2
• D. 1<4<2<3

Answer 1

The correct option is B 1<3<2<4

Tidal Volume is the normal volume of air displaced between normal inhalation and exhalation when extra effort is not applied. It is approx 500ml.

Residual volume is a lung volume which represents the amount of air left in the lungs after a forced exhalation. It is 1.1 litres.

Expiratory reserve volume is the additional amount of air that can be expired from the lungs by determined effort after normal expiration. It is 0.7 litres.

Vital Capacity is the greatest volume of air that can be expelled from the lungs after taking the deepest possible breath. It is approx 4.6 litres.

Hence option B is correct.