Q.

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

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a

total lung capacity

b

inspiratory capacity

c

vital capacity

d

expiratory capacity

answer is B.

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Detailed Solution

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Vital capacity (VC) is the maximum volume of air a person can breathe in after a forced expiration. It may also be defi ned as the maximum volume of air a person can breathe out after a forced inspiration. 

Vital capacity includes ERV, TV and IRV.

VC = ERV+TV+IRV (or) VC = TLC-RV

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