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  4. During expiration, the diaphragm becomes

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Q. During expiration, the diaphragm becomes

Rajasthan PMTRajasthan PMT 2011

Solution:

Expiration is a process by which $ C{{O}_{2}} $ is expelled out from the lungs. Muscle fibres of the diaphragm relax make it convex, and decreasing the volume of thoracic cavity.