Masseter muscle
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| Masseter muscle | ||
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| Muscles of the head and neck. | ||
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| Dissection, showing salivary glands of right side. (Masseter visible at center.) | ||
| Latin | muscualus masseter | |
| Gray's | subject #109 385 | |
| Origin: | zygomatic arch and maxilla | |
| Insertion: | coronoid process and ramus of mandible | |
| Artery: | masseteric artery | |
| Nerve: | masseteric nerve (V3) | |
| Action: | elevation (as in closing of the mouth) and retraction of mandible | |
| Antagonist: | Platysma muscle | |
| Dorlands/Elsevier | m_22/12549768 | |
In human anatomy, the masseter is one of the muscles of mastication.
It is particularly powerful in herbivores to assist when they are chewing plants.
[edit] Innervation
Along with the other three muscles of mastication, the masseter is innervated by the mandibular division of the trigeminal nerve.
Dc12345678910 23:23, 3 April 2007 (UTC)dc12345678910==External links==
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
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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
