the maximum amount of air that can be exhaled after a maximum inhalation (usually tested with a spirometer); used to determine the condition of lung tissue
Vital capacity is the maximum amount of air a person can expel from the lungs after a maximum inhalation. It is equal to the sum of inspiratory reserve volume, tidal volume, and expiratory reserve volume. A person's vital capacity can be measured by a wet or regular spirometer. In combination with other physiological measurements, the vital capacity can help make a diagnosis of underlying lung disease. A normal adult has a vital capacity between 3 and 5 litres. A human's vital capacity depends on age, sex, height, weight, and ethnicity. Lung volumes and lung capacities refer to the volume of air associated with different phases of the respiratory cycle. Lung volumes are directly measured, whereas lung capacities are inferred from volumes.
U.S. National Library of Medicine
The volume of air that is exhaled by a maximal expiration following a maximal inspiration.
The numerical value of vital capacity in Chaldean Numerology is: 1
The numerical value of vital capacity in Pythagorean Numerology is: 7
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"vital capacity." Definitions.net. STANDS4 LLC, 2017. Web. 25 Apr. 2017. <http://www.definitions.net/definition/vital capacity>.