<s>[INST] context: Adductor of vocal cordsThyroarytenoid muscle:- R and L muscles; attached to thyroid and arytenoid cailages on each side.Action shoens and relaxes vocal ligament.Note: deeper inner fibers referred to as "vocalis muscle".Lateral cricoarytenoid muscle: (R and L muscles):- Attached to cricoid and arytenoid cailage on each side.- Closes or adducts vocal folds.- Supplied by Recurrent laryngeal nerve.Cricothyroid muscle:Attached to cricoid and thyroid cailages.Tilts the thyroid cailage, thus increasing tension of vocal foldsSupplied by external laryngeal nerveInter-arytenoid muscle (transverse and oblique)- Attached between right and left arytenoid cailages- Closes inlet of larynx- Supplied by Recurrent laryngeal nerve Abductor of vocal cordsPosterior cricoarytenoid muscleAttached to cricoid and arytenoid cailagesMove arytenoid cailages so as to move both vocal folds apa, "open" of abduct vocal foldsSupplied by Recurrent laryngeal nerveVocalis muscle (derived from inner and deeper fibers of thyroarytenoid msucle)Supplied by Recurrent laryngeal nerveAll intrinsic muscles of the larynx are supplied by the recurrent laryngeal nerve except for cricothyroid which is supplied by external laryngeal nerve. [/INST] question: The muscle which is not supplied by recurrent laryngeal nerve is | options: A: Thyroarytenoid B: Posterior cricoarytenoid C: Cricothyroid D: Lateral cricoarytenoid | answer: C </s>