Which muscles undergo contraction during norm | vedclass

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Question

(D) Normal expiration is a passive process in humans. During normal breathing,the diaphragm and external intercostal muscles $(EICM)$ relax,which caus

Vedclass · Accepted Answer

No muscles contract during normal expiration

Vedclass · Answer

(D) Normal expiration is a passive process in humans. During normal breathing,the diaphragm and external intercostal muscles $(EICM)$ relax,which causes the thoracic volume to decrease and leads to the expulsion of air from the lungs. No active muscle contraction is required for normal expiration. Therefore,the correct answer is that no muscles contract during normal expiration.

Which muscles undergo contraction during normal expiration?

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