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Listed below are four respiratory capacities (1-4) and four jumbled respiratory volumes of normal human adult

 

Respiratory Capacities

Respiratory volumes

1

Residual volume

2500 mL

2

Vital capacity

3500 mL

3

Inspiratory reserve volume

1200 mL

4

Inspiratory capacity

4500 mL


Which one of the following is the correct matching of two capacities and volumes?

Respiratory Capacities

Respiratory volumes

Residual volume

2500 mL

Vital capacity

3500 mL

Inspiratory reserve volume

1200 mL

Inspiratory capacity

4500 mL

  • (2)2500 mL,   (3) 4500 mL

  • (3) 1200 mL,  (4) 2500 mL

  • (4) 3500 mL,  (1) 1200 mL

  • (1) 4500 mL,  (2) 3500 mL

Answer

C.

(4) 3500 mL,  (1) 1200 mL

Inspiratory Capacity (IC) is the maximum amount of air that can be inspired after a normal expiration, IC, = TV +IRV. It is 3600 mL in adult male and 2400 mL in the adult female. 

Residual Volume (RV) is the amount of air remaining in the lungs after a forced exhalation. Its average value is 1200 mL and 1000 mL in adult male and female respectively.

Inspiratory Capacity (IC) is the maximum amount of air that can be inspired after a normal expiration, IC, = TV +IRV. It is 3600 mL in adult male and 2400 mL in the adult female. 

Residual Volume (RV) is the amount of air remaining in the lungs after a forced exhalation. Its average value is 1200 mL and 1000 mL in adult male and female respectively.