Why is there is a residual volume of air in lungs?
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The residual volume (RV) is the amount of air that is left after expiratory reserve volume is exhaled. The lungs are never completely empty: There is always some air left in the lungs after a maximal exhalation.
AGouthami:
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So that the lungs don not collapse and there is some amount of air left even after exhalation
thank you
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