First slide

Mechanism of Breathing

Question

Total volume of air a person can expire after a normal inspiration is termed

Easy

A

Vital capacity
B

Total lung capacity
C

Expiratory capacity
D

Functional residual capacity

Solution

Total volume of air a person can expire after a normal inspiration is termed expiratory capacity (EC). This includes tidal volume and expiratory reserve volume (TV+ERV).
Vital Capacity is the maximum volume of air a person can breathe in after a forced expiration.
Total Lung Capacity (TLC) is the total volume of air accommodated in the lungs at the end of a forced inspiration.
Functional Residual Capacity (FRC) is the volume of air that will remain in the lungs after a normal expiration.

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