In expiration condition, diaphragm becomes

Circular

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Relaxed

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Fully contracted

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Expanded

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Solution

The correct option is B Relaxed
During expiration, the diaphragm becomes relaxed and becomes dome-shaped which leads to a reduction in the intrathoracic space. Hence, the air is forced out from the lungs following the pressure gradient.
So, the correct answer is 'Relaxed'.

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Similar questions

In expiration diaphragm becomes

flattened

relaxed

straightened

arched/dome shaped

During expiration the diaphragm becomes:

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