This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy of Larynx, Subject name: ENT
[{'content': 'External laryngeal nerve supplies which muscle? \nSelect and explain. \nA. Cricothyroid, B. Thyroarytenoid, C. Cricoarytenoid, D. Vocalis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: 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.', 'role': 'assistant'}]