Physiology DNB 2018 6d2c4b8c What is FRC? A Volume present in lungs after normal expiration B Volume present in lungs after forceful expiration C Volume present in lungs after deep inspiration D Volume present in lungs after normal inspiration High-Yield Explanation FUNCTIONAL RESIDUAL CAPACITY = ERV + RV The volume of air that remains in lungs at the end of normal expiration = 2300 ml