Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): In a healthy human, the Functional Residual Capacity (FRC) is always greater than the Expiratory Reserve Volume (ERV). Reason (R): Functional Residual Capacity includes the Residual Volume (RV), which is the volume of air that can be expelled from the lungs by a forcible expiration. In the light of

Step-by-step solution

Assertion (A) is true: Functional Residual Capacity (FRC) is the volume of air that will remain in the lungs after a normal expiration. It is mathematically the sum of Expiratory Reserve Volume (ERV) and Residual Volume (RV). Since RV is a positive volume (1100 mL to 1200 mL), FRC is always greater than ERV. Reason (R) is false: While FRC does include the Residual Volume (RV), RV is defined as the volume of air remaining in the lungs even after a forcible expiration. It cannot be expelled from the lungs. Therefore,