Zygomaticus major muscle

Muscles · Latin: Musculus zygomaticus major

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The zygomaticus major muscle is a muscle of the human body. It extends from each zygomatic arch (cheekbone) to the corners of the mouth.

It is a muscle of facial expression which draws the angle of the mouth superiorly and posteriorly to allow one to smile.

Bifid zygomaticus major muscle is a notable variant, and may cause cheek dimples.

Definition from Wikipedia, CC BY-SA 4.0.