NEET Zoology Gas Exchange MCQ Question
If a person has a tidal volume (TV) of 500 mL and an expiratory reserve volume (ERV) of 1000 mL, what is their functional residual capacity (FRC) if their residual volume (RV) is 1100 mL?
2100 mL
1600 mL
2600 mL
2200 mL
Correct Answer
Detailed Explanation
Functional Residual Capacity (FRC) is the volume of air remaining in the lungs after normal expiration and is calculated as the sum of Expiratory Reserve Volume (ERV) and Residual Volume (RV). Given ERV = 1000 mL and RV = 1100 mL, FRC = ERV + RV = 1000 mL + 1100 mL = 2100 mL.
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