innervated by innervated_by has muscle origin has muscle origin has muscle insertion has muscle insertion has muscle antagonist Homo sapiens arytenoid cartilage cricoid cartilage recurrent laryngeal nerve posterior crico-arytenoid lateral crico-arytenoid http://upload.wikimedia.org/wikipedia/commons/3/34/Musculuscricoarytenoideuslateralis.png The lateral cricoarytenoid (also anterior cricoarytenoid) muscles extend from the lateral cricoid cartilage to the ipsilateral arytenoid cartilage. By rotating the arytenoid cartilages medially, these muscles adduct the vocal cords and thereby close the rima glottidis, protecting the airway. (Their action is antagonistic to that of the posterior cricoarytenoid muscles. ) The lateral cricoarytenoid muscles receive innervation from the recurrent laryngeal branch of the vagus nerve (CN X). cricoarytaenoideus lateralis musculus cricoarytenoideus lateralis FMA:46579 cricoarytænoideus lateralis cricoarytaenoideus lateralis muscle lateral cricoarytenoid muscle cricoarytænoideus lateralis muscle lateral cricoarytenoid SCTID:244813000 UBERON:0008573 Wikipedia:Lateral_cricoarytenoid_muscle lateral cricoarytenoideus crico-arytenoid muscle