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risorius (muscle)

 

Definition: facial muscle of mouth; origin, from platysma and fascia of masseter; insertion, orbicularis oris and skin at corner of mouth; action, draws angle of mouth laterally, lenghthening rima oris; nerve supply, facial.

Synonym(s): musculus risoriusTA, Albinus muscle1, Santorini muscle

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