Question

Functional residual capacity = __________.

a) lung volume when the elastic recoil of the lungs is equal and opposite to the elastic recoil of the chest wall
b) lung volume at rest between breaths
c) VC + RV
d) ERV + RV
e) Answers a, b, and c are correct.
f) Answers a, b, and d are correct.

Answer 1

The functional residual capacity (FRC) is the amount of air that remains in the lung after a normal tidal expiration. It represents lung volume at rest between breaths.

Step-by-step explanation:

The functional residual capacity (FRC) is the amount of air that remains in the lung after a normal tidal expiration. It is the sum of the expiratory reserve volume (ERV) and the residual volume (RV). The FRC represents the volume of air in the lung at rest between breaths. Therefore, the correct answer is b) lung volume at rest between breaths.