Functional residual capacity represents the volume of air remaining in lungs: (A) After forceful expiration, (B) After forceful inspiration, (C) After normal inspiration, (D) After normal expiration
Answer is D. Functional residual capacity * Functional residual capacity is the volume of air remaining in the lungs after expiration of a normal breath * Normal value - 2.5 L * (Residual volume + Expiratory reserve volume) Ref:- Ganong's Review of Medical Physiology 25th ed; pg num:- 629