Which of the Following is Not Primarily a Muscle of Facial

Question

Which of the following is not primarily a muscle of facial expression?
A) buccinator
B) depressor labii
C) risorius
D) masseter
E) mentalis

Accepted Answer

The masseter is not primarily a muscle of facial expression, it is a muscle of mastication (chewing). The rest of the muscles listed are all primarily involved in moving the face and creating facial expressions.