Definition: intrinsic muscle of the larynx formed by several of the finer and most medial fibers of the thyroaryteroid muscle attached directly to the outer side of the vocal ligament; origin, depression between the two laminae of thyroid cartilage; insertion, portions of vocal ligament and vocal process of arytenoid; action, shortens and relaxes portions of vocal cords; nerve supply, recurrent laryngeal.
Synonym(s): musculus vocalisTA, musculus thyroarytenoideus internus, vocal muscle
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