why there is always some air in lungs even after forceful expiration?What this volume of air is called?
class 10|Biology|
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there should be some air in the lungs even after forceful expiration BC if not, your lungs would collapse. the volume of air that remains even after forceful expiration is called residual volume
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ANSWER:
The air that is left after the air is exhaled is called residual air, as the lung can’t be empty after exhaling air back in the atmosphere as the pressure outside the lung will crush it and the tissues would collide and stick together.
EXPLANATION:
Hence, causing failure in respiration, therefore, mechanism has been provided so that air is left even after exhaling. And as for measurement of the left volume of air, it is not possible as the complete removal of air is not possible so to determine how much is the residual air is currently impossible.
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