Question

Explain why a residual amount of air is left in the lungs

Answer 1

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

Answer 2

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$\huge{\boxed{\bold{ANSWER}}}$

During the breathing cycle, when air is taken in and let out, the lungs always contain a residual volume of air so that there is sufficient time for oxygen to be absorbed and for the carbondioxide to be released.

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