After forceful inspiration, the amount of air that can be breathed out by maximum forced expiration is equal to

Inspiratory Reserve Volume (IRV) + Expiratory Reserve Volume (ERV)+Tidal Volume (TV)+Residual Volume (RV)

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IRV+RV+ERV

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IRV+TV+ERV

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TV+RV+ERV

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Solution

The correct option is C IRV+TV+ERV
The maximum amount of air which can be breathed out through forceful expiration after a forceful inspiration is called Vital Capacity (VC). It is the sum total of Tidal Volume (TV) Inspiratory Reserve Volume (IRV) and Expiratory Reserve Volume (ERV).
VC = TV + IRV + ERV
= 500 + (2500 to 3000) + (1000 to 1100) ml
= (4000 to 4600) ml

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The maximum volume of air that can be released from the lungs by forceful expiration after maximum inspiration is called the _____.

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