The total amount of exchangeable air is known as ________.
A) residual volume
B) inspiratory reserve volume (IRV)
C) tidal volume (TV)
D) vital capacity (VC)

Question

Quizplus · Accepted Answer

Vital capacity (VC) is the maximum amount of air a person can exhale after taking the deepest breath possible. It is calculated as the sum of the tidal volume, inspiratory reserve volume (IRV), and expiratory reserve volume (ERV), which makes it the total amount of exchangeable air. Residual volume (A) is the volume of air that remains in the lungs even after maximum exhalation, and tidal volume (C) is the amount of air that moves in and out of the lungs during normal breathing. Inspiratory reserve volume (B) is the amount of extra air a person can inhale after taking a normal breath.

The Total Amount of Exchangeable Air Is Known as ________