Zygomaticus major muscle
| Zygomaticus major | |
|---|---|
 Muscles of the head, face, and neck. Zygomaticus major shown in red. | |
| Details | |
| Latin | musculus zygomaticus major |
| anterior of zygomatic | |
| modiolus of mouth | |
| facial artery | |
| zygomatic and buccal branches of the facial nerve | |
| Actions | draws angle of mouth upward and laterally |
| Identifiers | |
| Gray's | p.383 |
| Dorlands /Elsevier | m_22/12551382 |
| TA | A04.1.03.029 |
| FMA | 46810 |
| Anatomical terms of muscle | |
The zygomaticus 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 (smile). Like all muscles of facial expression, the zygomatic major is innervated by the facial nerve (the seventh cranial nerve), more specifically, the buccal and zygomatic branches of the facial nerve.
Structure
The zygomaticus extends from each zygomatic arch (cheekbone) to the corners of the mouth.
Function
It raises the corners of the mouth when a person smiles. Dimples may be caused by variations in the structure of this muscle.
Image
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Position of zygomaticus major muscle. Animation.
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Muscles of the head, face, and neck. Zygomaticus major shown in red.
See also
- This article uses anatomical terminology; for an overview, see anatomical terminology.
External links
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Wikimedia Commons has media related to Zygomaticus major muscles. |
- 208339005 at GPnotebook
- ‹The template EMedicineDictionary is being considered for deletion.› Zygomaticus+major+muscle at eMedicine Dictionary
- PTCentral
- Clips of muscle action
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