Identify the prime mover that facilitates the action described in the following situation: When asked to respond to a question in class,you raise your eyebrows and your forehead wrinkles.

Question

Quizplus · Accepted Answer

The prime mover that facilitates the action of raising eyebrows and wrinkling forehead is the frontalis muscle. The nasalis muscle facilitates nostril flaring, levator labii superioris muscle facilitates lifting of the upper lip, and procerus muscle facilitates furrowing of the brow.

Identify the Prime Mover That Facilitates the Action Described in the Following