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The maximum volume of air a person can breathe in after a forced expiration is known as:

1. (a) Total lung capacity
2. (b) Expiratory capacity
3. (c) Vital capacity
4. (d) Inspiratory capacity

Correct answer: (c) Vital capacity

Solution

Vital capacity is the maximum amount of air that can be exhaled after a maximal inspiration, or equivalently inhaled after a forced expiration. It includes inspiratory reserve volume, tidal volume, and expiratory reserve volume, but not residual volume.

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