Question

why do lungs always have residual volume of air ? ​

Answer 1

Answer:

hey mate! this is the answer

Explanation:

The lungs always contain a residual volume of air so that during breathing cycle there is sufficient time for oxygen to be absorbed and for the carbon dioxide to be released. Residual Volume is important because it prevents the lungs from collapsing.

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Answer 2

Hi mate ☺️

The residual volume functions to keep the alveoli open even after maximum expiration. In healthy lungs, the air that makes up the residual volume allows for continual gas exchange to occur between breaths. The oxygen-depleted residual air is then mixed with newly inhaled air to improve gas exchange at the alveoli.

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