Cricothyroid muscle is supplied by which nerve?

Ans. is 'c' i.e., External laryngeal nerve Nerve supply of larynx* The main cranial nerve innervating the larynx is the vagus nerve via its branches; superior laryngeal nerve (SLN) and recurrent laryngeal nerve (RLN).Sensory supply of larynx* Above the level of vocal cords, larynx is supplied by internal laryngeal nerve, a branch of superior laryngeal nerve.* Below the vocal cord, larynx is supplied by recurrent laryngeal nerve.Motor supply of larynx* All the intrinsic muscles of larynx are supplied by recurrent laryngeal nerve except for cricothyroid muscle.* Cricothyroid is supplied by external laryngeal nerve, a branch of superior laryngeal nerve.