External laryngeal nerve supplies which muscle?: (A) Cricothyroid, (B) Thyroarytenoid, (C) Cricoarytenoid, (D) Vocalis
Answer is A. ANSWER: (A) Cricothyroid REF: Dhingra's 4" ed p. 318* Superior laryngeal nerve: arises from the inferior ganglion of the vagus* Divides into external and internal branches.* External laryngeal nerve supplies cricothyroid* Internal laryngeal nerve pierces the thyrohyoid membrane and gives sensory supply to larynx and hypopharynx.