NEET Zoology Gas Exchange MCQ Question
If a person has a Residual Volume (RV) of 1200 mL and an Expiratory Reserve Volume (ERV) of 1000 mL, what is their Functional Residual Capacity (FRC)?
2200 mL
1000 mL
200 mL
1200 mL
Correct Answer
Detailed Explanation
Functional Residual Capacity (FRC) is the volume of air that remains in the lungs after a normal expiration, calculated as the sum of Residual Volume (RV) and Expiratory Reserve Volume (ERV). Given RV = 1200 mL and ERV = 1000 mL, FRC = RV + ERV = 1200 mL + 1000 mL = 2200 mL.
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