Muscles that dilate the vocal cavity

Posterior cicatricialis , m. Cricoarytenoideus posterior, steam room; Begins from the posterior surface of the cricoid cartilage and, moving obliquely upward and laterally, is attached to the muscle process of the arytenoid cartilage . The muscle rotates the arytenoid cartilage in such a way that the vocal processes of both arytenoid cartilages, and hence the vocal cords attached to them, are removed one from the other, and the voice gap widens. Sometimes there is an unstable carotid -cricoid muscle , m. Ceratocri-coideus, which is part of the posterior posterior cricoid muscle and attached to the posterior margin of the lower horns of the thyroid cartilage .

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