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