Question

the amount of air that cannot be expelled is the

a. al lung capacity

b. expiratory reserve capacity

c. functional residual capacity

d. residual volume

Explanation:

• Total lung capacity: It is the total volume of air in the lungs after a maximum inhalation. It is not the air that cannot be expelled.
• Expiratory reserve capacity: It is the additional air that can be forcefully exhaled after a normal exhalation.
• Functional residual capacity: It is the volume of air remaining in the lungs after a normal exhalation. It is not the air that cannot be expelled completely.
• Residual volume: It is the volume of air remaining in the lungs after a maximum exhalation. This is the air that cannot be expelled.

Answer:

D. residual volume