Zygomaticus major muscle
From Wikipedia, the free encyclopedia
| Zygomatic major | ||
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| Muscles of the head, face, and neck. | ||
| Latin | musculus zygomaticus major | |
| Gray's | subject #108 383 | |
| Origin: | anterior of zygomatic | |
| Insertion: | modiolus of mouth | |
| Artery: | facial artery | |
| Nerve: | buccal branch of facial nerve | |
| Action: | draws angle of mouth | |
| Dorlands/Elsevier | m_22/12551382 | |
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.
[edit] Additional images
 Muscles of head and neck |
 Left zygomatic bone. Malar surface. |
 The arteries of the face and scalp. |
 Veins of the head and neck. |
[edit] External links
- LUC zmj
- GPnotebook 208339005
- Dictionary at eMedicine Zygomaticus+major+muscle
- PTCentral
- Clips of muscle action
scalp/eyelid: occipitofrontalis (occipitalis, frontalis) - orbicularis oculi - corrugator supercilii - depressor supercilii
extraocular: levator palpebrae superioris - superior tarsal - rectus (superior, inferior, medial, lateral) - oblique (superior, inferior) - intraocular: ciliary - iris dilator - iris sphincter
ear: auriculares - temporoparietalis - stapedius - tensor tympani
nose: procerus - nasalis (dilatator naris) - depressor septi nasi - levator labii superioris alaeque nasi
mouth: levator anguli oris/depressor anguli oris - levator labii superioris/depressor labii inferioris - zygomaticus (major, minor) - mentalis - buccinator - orbicularis oris - risorius
mastication: masseter - temporalis - pterygoid (lateral, medial)
tongue: extrinsic (genioglossus - hyoglossus - chondroglossus - styloglossus) intrinsic (superior longitudinal - inferior longitudinal - transversus - verticalis)
soft palate: levator veli palatini - tensor veli palatini - musculus uvulae - palatoglossus - palatopharyngeus
pharynx: pharyngeal constrictor (inferior, middle, superior) - stylopharyngeus - salpingopharyngeus
larynx: cricothyroid - posterior cricoarytenoid - lateral cricoarytenoid - arytenoid - thyroarytenoid
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