buccinator


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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

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 ?
The target face muscle for this study is Masseter, Buccinator, Depressor anguli oris, and Zygomaticus major/minor.
Enzymehistochemical and morphological characteristics of muscle fibre types in the human buccinator and orbicularis oris.
* The parotid duct passes along the lateral surface of the buccal fat pad or penetrates the body of the fat pad before it opens on the buccinator muscle.
The bolus is introduced to the oral cavity; thereafter there is interaction between orbicularis oris, buccinator and the muscles of mastication to adequately prepare the bolus for the pharyngeal stage.
The buccinator [beksimitar] muscles form the insides of the cheeks.
Buccinator foramen--without medial wall, open below pterygoid (1); with a bony shelf on foramen floor beside alisphenoid (2); with a shelf and medial wall or partial wall enclosing foramen (3).
Two trumpeter swans (Cygnus buccinator) bred and released into the wild by the AZA-accredited Lincoln Park Zoo in Chicago (www.lpzoo.com) have made history by hatching two healthy chicks.
Evaluation of facial muscle innervated by cranial nerve VII can be assessed easily and quite quickly; wrinkling of the forehead (frontalis), closing the eyes tightly (orbicularis oculi), closing the lips tightly (orbicularis oris), pulling back the corners of the mouth as in smiling (buccinator), and frowning (platysma) can be accomplished in under 10 seconds.
(See page 33 for details.) Junior 7 & 8 tongue throat stomach sternum radius thigh kidney eardrum enamel trachea bronchi muscle shoulder tissue plasma Advanced 9 & 10 scapula mandible stapes incus tarsus maxilla carpals bicuspid masseter hyoid carotid lacrimal jugular thyroid cerebrum parietal temporal occipital Super 11 & 12 vertebra pituitary alveoli eustachian tube sphenoid incisor canine platysma buccinator tropezius maxillary sinus sternocleidomastoid metatarsals trochlea mental foramen