Answered

Normal, quiet exhalation needs which of the following muscles to contract?
Oscalenes
intercostals
none of the above
O diaphragm



Answer :

GinnyAnswer

Final answer:

Normal, quiet exhalation requires the diaphragm to relax passively to let air out of the lungs.


Explanation:

Quiet breathing, also known as eupnea, requires the diaphragm and external intercostals to contract. For normal, quiet exhalation, the diaphragm relaxes passively to let air out of the lungs.


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