Which volume remains in the lungs after a maximal expiration?
A
Tidal volume (TV)
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B
Expiratory reserve volume (ERV)
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C
Functional residual capacity (FRC)
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D
Residual volume (RV)
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Solution
The correct option is D Residual volume (RV) During a forced expiration, the volume expired is the tidal volume (TV) plus the expiratory reserve volume (ERV). The volume that remains in the lungs is the residual volume (RV).