The most important muscle of inspiration is/are the
A)diaphragm.
B)rectus abdominis.
C)internal oblique.
D)external intercostals.

Question

Quizplus · Accepted Answer

The diaphragm is the most important muscle of inspiration as it plays a major role in expanding the chest cavity and lowering the pressure in the lungs. This allows air to rush into the lungs, bringing in oxygen for the body to use. The other muscles listed (rectus abdominis, internal oblique, and external intercostals) are involved in breathing but to a lesser extent than the diaphragm.

The Most Important Muscle of Inspiration Is/are the