Breathing and Exchange of Gases
1 Board Biology previous year questions on Breathing and Exchange of Gases — options free on every question; 1 include the answer & explanation free, the rest unlock with PYQ Pass.
Q1 FREE PREVIEW
Vital capacity of lung is;
✓ Correct answer: a)
\(IRV + ERV + TV\)
Explanation
Explanation:
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Vital Capacity (VC) is the maximum volume of air a person can breathe out after a maximum inspiration.
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It includes:
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Inspiratory Reserve Volume (IRV) – extra air that can be inhaled after a normal inspiration.
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Tidal Volume (TV) – air inhaled or exhaled during normal breathing.
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Expiratory Reserve Volume (ERV) – extra air that can be exhaled after a normal expiration.
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So,
👉 VC = IRV + TV + ERV
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