Zygomaticus major muscle

Zygomaticus major muscle

Muscle infobox
Name = Zygomatic major
Latin = musculus zygomaticus major
GraySubject = 108
GrayPage = 383


Caption = Muscles of the head, face, and neck.
Origin = anterior of zygomatic
Insertion = modiolus of mouth
Action = draws angle of mouth upward and laterally
Blood = facial artery
Nerve = buccal branch of facial nerve
DorlandsPre = m_22
DorlandsSuf = 12551382
The Zygomatic major is a muscle of the human body. It is a muscle of facial expression which draws the angle of the mouth superiorly and posteriorly. Like all muscles of facial expression, the zygomatic major is innervated by the facial nerve (Cranial Nerve VII).

The Zygomaticus extends from each zygomatic arch (cheekbone) to the corners of the mouth. It raises the corners of the mouth when a person smiles.

External links

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* [http://www.ptcentral.com/muscles/musclehead.html#zygomaticus%20major PTCentral]
* [http://face-and-emotion.com/dataface/expression/muscles.jsp Clips of muscle action]


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