During quiet inhalation,which respiratory muscles contract?
A)diaphragm and external intercostals
B)diaphragm and internal intercostals
C)internal and external intercostals
D)diaphragm and external obliques
E)diaphragm and internal obliques

Question

Quizplus · Accepted Answer

During quiet inhalation, the diaphragm and external intercostals contract to expand the ribcage and increase the volume of the thoracic cavity, which leads to the entry of air into the lungs. Internal intercostals are only involved in forced exhalation, while obliques are not respiratory muscles.

During Quiet Inhalation,which Respiratory Muscles Contract