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10/10/2021 6:34 pm
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Explain why, when air is taken in and let out during breathing, the lungs always contain a residual volume of air.
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10/10/2021 6:35 pm
During the breathing cycle, when air is taken in and let out, the lungs always contain a certain residual volume of air so that there is sufficient time ‘for the oxygen absorbed’ into the blood and ‘for the carbon dioxide to be released’ from the blood.