lung volumes
measurements of the volume of air in the lungs
vital capacity
maximum amount of air a person can expel from the lungs after a maximum inhalation
functional residual capacity
volume of air in the lungs at the end of passive expiration
closing capacity
lung volume at which the dependent lung zones cease to ventilate, presumably as a result of airway closure
dead space
air that does not take part in gas exchange
tidal volume
volume of air displaced between normal inhalation and exhalation
total lungs capacity
volume of air contained in the lungs at the end of a maximal inspiration