Which muscles is are)contracted to exhale forcibly?
A)diaphragm alone
B)rectus abdominis and diaphragm
C)internal intercostals and rectus abdominus
D)external intercostals and diaphragm

Question

Quizplus · Accepted Answer

Forcible exhalation involves the contraction of the internal intercostal muscles and the rectus abdominis muscle. The internal intercostals assist in pulling the ribs downwards and inwards, decreasing the volume of the thoracic cavity, while the rectus abdominis contracts to increase the pressure in the abdominal cavity and push the diaphragm upwards, further decreasing the volume in the thoracic cavity. This increases the pressure within the lungs, allowing for a more forceful exhalation.

Which Muscles Is Are)contracted to Exhale Forcibly