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

Question

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

Accepted Answer

Residual volume is the amount of air that remains in the lungs after a maximal exhalation. It cannot be forcefully exhaled and is important for maintaining lung function and preventing collapse of the airways. Tidal volume refers to the amount of air that is breathed in and out during normal breathing, and inspiratory reserve volume refers to the amount of air that can be forcefully inhaled beyond normal tidal volume. None of these options fit the description given in the question.