Which Facial Muscle is Considered the "Smiling" Muscle Since It

Question

Which facial muscle is considered the "smiling" muscle since it raises the corners of the mouth?
A) orbicularis oris
B) frontalis
C) orbicularis oculi
D) zygomaticus

Accepted Answer

The zygomaticus muscle is the "smiling" muscle as it raises the corners of the mouth when contracted. The orbicularis oris controls the movement of the lips, the frontalis raises the eyebrows, and the orbicularis oculi controls blinking and closing of the eyes.