masseter

(redirected from Masseter muscle)
Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
Related to Masseter muscle: temporalis muscle

masseter

[mə′sēd·ər]
(anatomy)
The masticatory muscle, arising from the zygomatic arch and inserted into the lower jaw.
References in periodicals archive ?
3) IPEH also may involve the pharynx, buccal mucosa, lips, mouth, tongue, masseter muscle, and parotid gland.
Static support of the facial soft tissues provides symmetry at rest without voluntary movement, while transposition of the temporalis or masseter muscle results in some facial tone and movement.
The graft was sutured to the masseter muscle anteriorly, to the zygomatic arch superiorly, to the sternocleidomastoid muscle posteroinferiorly, to the tragal perichondrium preauricularly, and to the mastoid periosteum postauricularly.
However, MRI of the face disclosed an ulcerative soft-tissue lesion that extended down to the level of the temporalis muscle, masseter muscle, and superficial parotid gland (figure 2).
The accessory parotid gland is located approximately 6 mm anterior to the main parotid gland, between the skin and the masseter muscle along an imaginary line that extends from the tragus to a point midway between the ala of the nose and the vermilion border of the lip.
The marginal mandibular branch leaves the lower portion of the parotid gland and passes into the neck below the angle of the mandible; it arches lateral to the submandibular gland and continues over the inferior border of the mandible, emerging in the face in front of the masseter muscle.
The nonviable inferior portion of the masseter muscle was also excised along with grossly clear margins down to the periosteum of the angle of the mandible (figure 3).
In addition, by 26 nun the embryo develops first-order ductules of the parotid primordium, which lies next to the masseter muscle, and several branches of the facial nerve course superficial to it.
Early signs and symptoms of malignant hyperthermia include masseter muscle rigidity (following succinylcholine administration), tachypnea, tachycardia, arrhythmias, a rising end-tidal carbon dioxide level, an increase in minute ventilation, and a hot soda-lime canister.