Select the correct set of events that occur during expirationA) relaxation of external intercostal musclesB) diaphragm is arched upwardsC) intra-pulmonary pressure increasesD) ribs and sternum are lifted upE) pulmonary volume increases

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A, B, D, E

B, C, D

A, B, C

B, D, E

answer is C.

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Detailed Solution

External intercostal muscles relax, diaphragm is arched upwards, intra-pulmonary pressure increases

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