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thyroarytenoid (muscle)


Definition: intrinsic muscle of larynx; origin, inner surface of thyroid cartilage; insertion, muscular process and outer surface of arytenoid; action, decreases tension on (relaxes) vocal cords lowering the pitch of the voice tone; it is antagonistic to the cricothyroid muscle in this action; nerve supply, recurrent laryngeal.

Synonym(s): musculus thyroarytenoideusTA, musculus thyroarytenoideus externus

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