cricoarytenoid muscle


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cricoarytenoid muscle

The lateral or the posterior cricoarytenoid -- laryngeal muscles. Origin: cricoid cartilage. Insertion: muscular process of arytenoid cartilage. Nerve: recurrent laryngeal of the vagus (CN X). Action: rotates arytenoid cartilages for vocalizations.
See also: muscle
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References in periodicals archive ?
The muscular process is the insertion point of the posterior and lateral cricoarytenoid muscles. 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.
At least one pair of agonist-antagonist muscles that can change vocal-fold length is needed, such as the cricothyroid muscle paired with the thyroarytenoid muscle, or the cricothyroid muscle paired with the lateral cricoarytenoid muscle or a strap muscle ...
Botulinum toxin was injected into the right lateral cricoarytenoid muscle. The patient healed well and has had no further difficulty.
The electromyographic activity of the posterior cricoarytenoid muscle (PCA) is linked to that of the diaphragm.
If the recurrent laryngeal nerve is injured at its insertion into the posterior cricoarytenoid muscle, the vocal fold will have problems with abduction.