The amount of air that remains in the lungs simply to keep them open is called the:
A. tidal volume.
B. inspiratory reserve volume.
C. expiratory reserve volume.
D. residual volume.
Answer: D. residual volume.
Health Professions
A. tidal volume.
B. inspiratory reserve volume.
C. expiratory reserve volume.
D. residual volume.
Answer: D. residual volume.