What Type(s)of Muscle Tissue Make(s)up the Muscles of Inspiration and Expiration

Question

What type(s)of muscle tissue make(s)up the muscles of inspiration and expiration?
A)Both consist of skeletal muscle.
B)Inspiratory muscles consist of skeletal muscle, and expiratory muscles consist of smooth muscle.
C)Inspiratory muscles consist of smooth muscle, and expiratory muscles consist of skeletal muscle.
D)Both consist of smooth muscle.
E)Inspiratory muscles consist of skeletal muscle, and expiratory muscles consist of cardiac muscle.

Accepted Answer

Both inspiration and expiration involve the contraction of skeletal muscles, specifically the diaphragm and intercostal muscles. Therefore, the correct choice is that both consist of skeletal muscle.