The ________ is the Primary Inspiratory Muscle in the Body

Question

The ________ is the primary inspiratory muscle in the body.
A) serratus anterior
B) rectus abdominis
C) diaphragm
D) internal oblique

Accepted Answer

The diaphragm is the primary muscle responsible for inspiration, contracting and pulling downward to increase the volume of the thoracic cavity and draw air into the lungs. The other muscles listed are not primarily involved in the process of inspiration.