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  4. Vital capacity of lungs is

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Q. Vital capacity of lungs is

BHUBHU 2012Breathing and Exchange of Gases

Solution:

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 $3400 \,mL - 4800\, mL$.