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The posterior cricoarytenoid muscle is a (bilaterally paired) intrinsic muscle of the larynx. It arises from the cricoid cartilage; it inserts onto the arytenoid cartilage of the same side. It is innervated by the recurrent laryngeal nerve. Each acts to open the vocal folds by pulling the vocal fold of the same side laterally.
Cricoarytenoid muscles are muscles that connect the cricoid cartilage and arytenoid cartilage. More specifically, it can refer to: Posterior cricoarytenoid muscle
The cricoid cartilage is the only laryngeal cartilage to form a complete circle around the airway. It is smaller yet thicker and tougher than the thyroid cartilage above. [1] It articulates superiorly [citation needed] with the thyroid cartilage, and the paired arytenoid cartilage. Inferiorly, the trachea attaches onto it. [1]
Posterior surface of muscular process of arytenoid cartilage: Insertion: Posterior surface of apex of adjacent arytenoid cartilage; extends into aryepiglottic fold: Nerve: recurrent laryngeal branch of vagus nerve [X] Actions: Sphincter of the laryngeal inlet: Identifiers; Latin: musculus arytenoideus obliquus: TA98: A06.2.08.010: TA2: 2203 ...
cricoarytenoid, posterior: head, larynx (left/right) posterior part of cricoid cartilage: muscular process of arytenoid cartilage: vagus nerve [CNX], recurrent laryngeal nerve: abducts and laterally rotates cartilage, pulling vocal ligaments away from midline and forward and so opening rima glottidis: lateral cricoarytenoid: 2 1 cricoarytenoid ...
The cricoarytenoid joint is a joint connecting the cricoid cartilage and the arytenoid cartilage. It is a very shallow ball-and-socket joint. It allows for rotation and gliding motion. This controls the abduction and adduction of the vocal cords.
Just above the vocal process is a shallow depression, the oblong fovea of the arytenoid cartilage. Together they constitute the insertion for the vocalis muscle. [3] Vocal process granulomas are rare and benign lesions that occur in 0.9–2.7% of adults with a voice disorder. Most occurrences and forms of vocal process granulomas regress ...
[15] [a] These muscles act to open, close, and adjust the tension of the vocal cords, and include the posterior cricoarytenoid muscles, the only muscle to open the vocal cords. [16]: 10–11 The nerves supply muscles on the same side of the body, with the exception of the interarytenoid muscle, which is innervated from both sides. [15]