The amount of air that cannot be forcefully exhaled from the lungs is called ________.
A) tidal volume
B) inspiratory reserve volume
C) residual volume
D) None of the listed responses is correct.

Question

Quizplus · Accepted Answer

Residual volume is the amount of air that remains in the lungs after a forced exhalation. It cannot be voluntarily exhaled and helps to keep the alveoli (air sacs in the lungs) open. Tidal volume is the amount of air that is breathed in and out during a normal breath and inspiratory reserve volume is the amount of air that can be forcefully inhaled after a normal inhalation.

The Amount of Air That Cannot Be Forcefully Exhaled from the Lungs