Read the following statements regarding respiratory volumes and capacities: Statement A : Total Lung Capacity (TLC) minus Residual Volume (RV) equals Vital Capacity (VC). Statement B : Inspiratory Capacity (IC) includes the Expiratory Reserve Volume (ERV). Statement C : The volume of air involved in breathing movements can be estimated by using a spirometer. Statement D : Residual Volume (RV) can be directly measured

Step-by-step solution

Statement A is correct: Total Lung Capacity (TLC) is the total volume of air accommodated in the lungs at the end of a forced inspiration. TLC = Vital Capacity (VC) + Residual Volume (RV). Therefore, TLC - RV = VC. Statement B is incorrect: Inspiratory Capacity (IC) is the total volume of air a person can inspire after a normal expiration. It includes Tidal Volume (TV) and Inspiratory Reserve Volume (IRV). It does not include ERV. Statement C is correct: The volume of air involved in breathing movements can be esti