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Question
Lungs are made up of air-filled sacs, the alveoli They do not collapse even after forceful expiration, because of
Lungs are made up of air-filled sacs, the alveoli They do not collapse even after forceful expiration, because of
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Solution
The correct option is A Residual Volume
Residual Volume refers to the amount of air remaining in the lungs, even after forceful expiration. Gaseous exchange between the alveoli and blood capillaries still occurs even after complete expiration. This is enabled by the residual volume of air present in the lungs. Residual volume also prevents the lung from collapsing, by preventing the inner lung surfaces from sticking together.
Residual Volume refers to the amount of air remaining in the lungs, even after forceful expiration. Gaseous exchange between the alveoli and blood capillaries still occurs even after complete expiration. This is enabled by the residual volume of air present in the lungs. Residual volume also prevents the lung from collapsing, by preventing the inner lung surfaces from sticking together.
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