Latin Musculus arytaenoideus | ||
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Origin Arytenoid cartilage on one side Insertion Arytenoid cartilage on opposite side Artery superior laryngeal artery Nerve recurrent laryngeal branch of the vagus Actions approximate the arytenoid cartilages (close rima glottis) | ||
The arytenoid /ærᵻˈtiːnɔɪd/ is a single muscle, filling up the posterior concave surfaces of the arytenoid cartilages.
It arises from the posterior surface and lateral border of one arytenoid cartilage, and is inserted into the corresponding parts of the opposite cartilage.
It consists of oblique and transverse parts.
Action
The Arytœnoideus approximates the arytenoid cartilages, and thus closes the opening of the glottis, especially at its back part to eliminate the posterior commissure of the vocal folds.
References
Arytenoid muscle Wikipedia(Text) CC BY-SA