The smiling muscle is the
A)buccinator.
B)zygomaticus.
C)frontalis.
D)orbicularis oris.

Question

Quizplus · Accepted Answer

The zygomaticus muscle is responsible for the upward motion of the mouth and the smiling expression. It is also known as the "smiling muscle." The buccinator muscle is responsible for keeping food pushed towards the teeth during chewing. The frontalis muscle is located in the forehead and is responsible for raising the eyebrows. The orbicularis oris muscle is responsible for puckering the lips.

The Smiling Muscle Is the