The Muscle That Raises the Corners of the Mouth as When

Question

The muscle that raises the corners of the mouth as when smiling is the ________ muscle.
A) orbicularis oculi
B) zygomaticus major
C) orbicularis oris
D) masseter
E) buccinator

Accepted Answer

The muscle that raises the corners of the mouth as when smiling is the zygomaticus major muscle. Choice A (orbicularis oculi) is responsible for closing the eyelids, choice C (orbicularis oris) is responsible for puckering the lips, choice D (masseter) is responsible for closing the jaw, and choice E (buccinator) is responsible for compressing the cheeks inward.