Which muscle is used in quiet expiration?
A) Internal intercostals
B) External intercostals
C) Abdominal muscles
D) None of the above

Question

Quizplus · Accepted Answer

Quiet expiration is primarily a passive process that does not require the active use of muscles. It occurs due to the elastic recoil of the lungs and the relaxation of the diaphragm and external intercostal muscles, which were contracted during inspiration.

Which Muscle Is Used in Quiet Expiration