Question

question 30
which of the following is the amount of air that always remains in the lungs?
a residual volume
b tidal volume
c vital capacity
d expiratory reserve volume

Explanation:

• Residual volume is the amount of air that remains in the lungs after a forced exhalation.
• Tidal volume is the amount of air that is inhaled or exhaled during normal breathing.
• Vital capacity is the maximum amount of air that can be exhaled after a maximum inhalation.
• Expiratory reserve volume is the amount of air that can be forcefully exhaled after a normal exhalation.

Answer:

A. Residual volume