# The volume of air that can be inspired forcefully after a normal inspiration is called:
A. Residual Volume (RV)
B. Tidal Volume (TV)
C. Expiratory Reserve Volume (ERV)
D. Inspiratory Reserve Volume (IRV)
The correct answer is D. Inspiratory Reserve Volume (IRV).
The Inspiratory Reserve Volume (IRV) is the volume of air that can be forcefully inspired after a normal inspiration (tidal volume). It represents the additional air that can be taken into the lungs beyond a typical breath.
- A. Residual Volume (RV): The volume of air remaining in the lungs after a maximal expiration.
- B. Tidal Volume (TV): The volume of air inhaled or exhaled during normal breathing.
- C. Expiratory Reserve Volume (ERV): The volume of air that can be forcefully exhaled after a normal expiration.
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