2026 PORTAGE LEARNING COMPLETE
QUESTIONS AND ANSWERS
⩥ Inspiratory Reserve Volume (IRV). Answer: maximum amount of air
able to be inhaled beyond normal inhalation. This is typically around
3000mL of air.
⩥ Expiratory Reserve Volume (ERV). Answer: maximum amount of air
able to be exhaled beyond normal exhalation (with determined effort),
typically around 1200mL of air.
⩥ Residual Volume (RV). Answer: amount of air remaining in lung that
cannot be exhaled, typically 1300mL of air.
⩥ Vital Capacity (VC). Answer: ERV+TV+IRV
⩥ Total Lung Capacity (TLC). Answer: VC +RV
⩥ Inspiratory Capacity (IC). Answer: TV+IRV (or) VC-ERV
⩥ Functional Residual Capacity (FRC). Answer: RV+ERV