buccinator


Also found in: Dictionary, Thesaurus, Wikipedia.
Related to buccinator: temporalis, Depressor anguli oris, Depressor labii inferioris, Levator labii superioris, Orbicularis oris, Zygomaticus major

buc·ci·na·tor (mus·cle)

[TA]
facial muscle of cheek; origin, posterior portion of alveolar portion of maxilla and mandible and pterygomandibular raphe; insertion, angle of mouth; also become interspersed with more horizontal portions of the orbicularis oris; action, flattens cheek, retracts angle of mouth; plays an important role in mastication, working with tongue and orbicularis oris muscle to keep food between teeth; when it is paralyzed, as in Bell palsy, food accumulates in the oral vestibule; nerve supply, facial.

buccinator

(bŭk′sĭ-nā′tər)
n.
The thin, flat muscle forming the wall of the cheek.

buccinator

[buk′sinā′tər]
Etymology: L, buccina, trumpet
the main muscle of the cheek, one of the 12 muscles of the mouth. It is pierced by the duct of the parotid gland opposite the second molar tooth. The buccinator, innervated by buccal branches of the facial nerve, compresses the cheek, acting as an important accessory muscle of mastication by holding food under the teeth.
enlarge picture
Buccinator

buccinator

Latin: trumpeter; A muscle of the cheek.

Action
Retracts angle of mandibula, compresses cheek.
 
Nerve
Buccal branch of facial.

Origin
Buccinator ridge of mandible, alveolar process of maxilla, pterygomandibular ligament.
 
Insertion
Orbicularis oris at angle of jaw.

buc·ci·na·tor mus·cle

(bŭk'si-nā'tŏr mŭs'ĕl)
Origin, posterior portion of alveolar portion of maxilla and mandible and pterygomandibular raphe; insertion, orbicularis oris at angle of mouth; action, flattens cheek, retracts angle of mouth; nerve supply, facial. Plays an important role in mastication, working with tongue to keep food between teeth; when it is paralyzed, food accumulates in the oral vestibule.
Synonym(s): musculus buccinator [TA] .
References in periodicals archive ?
Located just anterior to the parotid duct along the buccinator muscle
Mucosa covering the inner surface of the buccinator muscle
Anseriformes Trumpeter Swan Cygnus buccinator Anseriformes Barred Owl Strix varia Strigiformes Ostrich Struthio camelus Struthioniformes Magellanic Penguin Spheniscus magellanicus Sphenisciformes Black-Necked Crane Grus nigricollis Gruiformes Laughing Gull Larus atricilla Charadriiformes Domestic Duck Anas sp.
the buccal branch, which innervates the procerus, the zygomaticus major and minor, the levator labii superioris, the levator anguli oris, nasal muscles, the buccinator, and the orbicularis oris
the mandibular lamina (the depressor labii inferioris, the mentalis, the risorius, the depressor anguli oris, the inferior part of the orbicularis oris, and perhaps the buccinator and the levator anguli otis)
5,1,12] Other episodes have been attributed to anatomic abnormalities, including a patulous Stensen's duct, [4] masseter muscle hypertrophy, [5] and buccinator muscle weakness.
12] The buccinator muscle further acts to compress the duct during contraction.
In a naturally occurring dimple, there is a small defect in the muscles of the cheek (typically the buccinators muscle); when a person smiles or makes other facial expressions, the skin overlying this defect is stuck down to the underlying connective tissue and is pulled inward to create a dimple.