After normal expiration, the volume of air left in the lungs is
A
TV + ERV
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B
ERV + FRC
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C
RV + ERV
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D
FRC - ERV
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Solution
The correct option is C RV + ERV Functional Residual Capacity (FRC): It is the volume of air that will remain in the lungs after a normal expiration. This includes residual volume (RV) and expiratory reserve volume (ERV).