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NEET2023ZoologyBreathing and Exchange of GasesActual

Vital capacity of lung is ______ .

Options

  1. AIRV + ERV + TV
  2. BIRV + ERV
  3. CIRV + ERV + TV + RV
  4. DIRV + ERV + TV - RV

Correct answer

A. IRV + ERV + TV

Step-by-step solution

Vital Capacity (VC) is the maximum volume of air a person can breathe in after a forced expiration. This includes ERV, TV and IRV or the maximum volume of air a person can breathe out after a forced inspiration. Hence, option A is correct, i.e., VC= TV + IRV + ERV.

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