lateral cricoarytenoid muscle


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lat·er·al cri·co·ar·y·te·noid mus·cle

(lat'ĕr-ăl krī'kō-ar'i-tē'noyd mŭs'ĕl)
Intrinsic muscle of larynx; origin, upper margin of arch of cricoid cartilage; insertion, muscular process of arytenoid; action, adducts vocal folds (narrows rima glottidis); nerve supply, recurrent laryngeal.
Synonym(s): musculus cricoarytenoideus lateralis.
References in periodicals archive ?
In addition, botulinum toxin injection into the lateral cricoarytenoid muscle is helpful in some patients.
The posterior cricoarytenoid muscle is the single abductor t of the vocal fold, and the lateral cricoarytenoid muscle s contributes to adduction in concert with the action of the thyroarytenoid muscle.
Botulinum toxin was injected into the right lateral cricoarytenoid muscle.
26] The third motor branch innervates the lateral cricoarytenoid muscle (LCA), passing through it to terminate in the thyroarytenoid muscle (TA).
7] This is in contrast to other evidence that suggests that fast-twitch fibers in the thyroarytenoid and lateral cricoarytenoid muscles are reinnervated more rapidly and to a greater degree than slow-twitch fibers.

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