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stapedius (muscle)


Definition: one of the muscles of the auditory ossicles; origin, internal walls of pyramidal eminence in tympanic cavity; insertion, neck of the stapes; action, dampens vibration of stapes by drawing the head of the stapes backward as a result of a protective reflex stimulated by loud noise; nerve supply, facial.

Synonym(s): musculus stapediusTA, stapedius

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.