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

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inspiratory capacity

functional residual capacity

vital capacity

total lung capacity

answer is A.

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Detailed Solution

Inspiratory capacity is the total volume of air a person can inspire after a normal expiration. This includes tidal volume and inspiratory reserve volume ( TV+IRV).Functional residual capacity is the volume of air that will remain in the lungs after a normal expiration. This includes ERV+RV.Vital capacity is the maximum volume of air a person can breathe in after a forced expiration. This includes ERV, TV and IRV or the maximum volume of air a person can breathe out after a forced inspiration.Total lung capacity is the total volume of air accommodated in the lungs at the end of a forced inspiration. This includes RV, ERV, TV and IRV or vital capacity + residual volume.

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