The amount of air that normally moves into (or out of) the lung with each respiration.
B
The amount of air that enters the lung but does not participate in gas exchange.
C
The largest amount of air expired after maximal inspiratory effort.
D
The largest amount of gas that can be moved into and out of the lungs in 1 min.
High-Yield Explanation
The forced vital capacity (FVC), the largest amount of air that can be expired after a maximal inspiratory effort, is frequently measured clinically as an index of pulmonary function.