After forceful expiration, air left in the lungs is called as
A
Residual volume
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B
Vital capacity
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C
Total capacity
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D
Tidal volume
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Solution
The correct option is A Residual volume Residual volume (RV) is a lung volume, representing the amount of air left in the lungs after a forced exhalation. Residual volume (RV) is about 1,200 ml.