Main Model
Transverse arytenoid muscle
Transverse arytenoid
Origin: One arytenoid cartilage
Insertion: Contralateral arytenoid cartilage
Innervation: Inferior laryngeal nerve (terminal part of recurrent laryngeal nerve, from CN X)
Main Action(s): Adduct arytenoid cartilages (adducting intercartilaginous portion of vocal folds, closing posterior rima glottidis)