Cricothyroid muscle is supplied by:: (A) Superior laryngeal nerve, (B) External laryngeal nerve, (C) Vagus nerve, (D) Glossopharyngael nerve
Answer is A. All the muscles which play any role in movement of vocal cord are supplied by recurrent laryngeal nerve except the cricothyroid muscle which receives its innervation from the external laryngeal nerve - a branch of superior laryngeal nerve.