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Zygomaticus Major muscle

In this article, we will discuss about the Zygomaticus Major muscle. So, let’s get started.

Zygomaticus Major muscle

It originates from the zygomatic arch in front of the zygomaticotemporal suture and gets inserted into the angle of mouth. It is innervated by the facial nerve (buccal and zygomatic branch) and artery supply is through the facial artery (superior labial branch). Its chief action is drawing the angle of mouth upward and laterally, contraction of this muscle produces laughing expression (smile).

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