Question

what is vital capacity ​

Answer 1

Vital capacity is the maximum amount of air a person can expel from the lungs after a maximum inhalation. It is equal to the sum of inspiratory reserve volume, tidal volume, and expiratory reserve volume. A person's vital capacity can be measured by a wet or regular spirometer.

Answer 2

the greatest volume of air that can be expelled from the lungs after taking the deepest possible breath.