Which of the following muscles originates on the inferior border of the mandible and inserts at each of the labial commissures?
A)Levator anguli oris muscle
B)Depressor labii inferioris muscle
C)Depressor anguli oris muscle
D)Orbicularis oris muscle

Question

Quizplus · Accepted Answer

The Depressor anguli oris muscle originates on the inferior border of the mandible and inserts at each of the labial commissures, pulling the corners of the mouth downward and laterally. The Levator anguli oris muscle lifts the corners of the mouth, the Depressor labii inferioris muscle pulls the lower lip downward and outward, and the Orbicularis oris muscle encircles the mouth and is responsible for puckering and closing the lips.

Which of the Following Muscles Originates on the Inferior Border