musculus buccinator --> buccinator
(Science: anatomy, muscle) 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 paralysed, food accumulates in the oral vestibule.
Origin: L, a trumpeter, fr. Bucinare to sound the trumpet.