Tidal volume
Amount (volume) of air moving in and out of lungs at rest
Inspiratory reserve volume
Additional amount of air can be inhaled after normal inspiration
Expiratory reserve volume
Additional amount of air can be exhaled after normal expiration
Residual volume
Amount of air that remains in the lungs after maximum forceful expiration
Inspiratory capacity
Total volume of air can be inspired following a normal expiration
Functional residual capacity
Volume of air present in lungs at the end of passive expiration
Vital capacity
Volume of air exhaled after maximum inspiration
Total lung capacity
Volume of air contained in lungs at end of maximal inspiration