Vital capacity of lungs isA. `IRV + ERV`B. `IRV + ERV + TV - RV`C. `IR – InterviewSolution

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1.	Vital capacity of lungs isA. `IRV + ERV`B. `IRV + ERV + TV - RV`C. `IRV + ERV + Tv + RV`D. `IRV + ERV + TV`.
Answer» Correct Answer - D Vital capacity is the maximum volume of air a person can breathe in after a forced expiration or the maximum volume of air a person can breathe out after a forced inspiration. This equals the inspiratory reserve volume (IRV) + expiratory reserve volume (ERV) + tidal volume (TV). Its value is `3400` mL - `4800` mL.

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