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': 'Only laryngeal muscle that is innervated bidirectionally is \nSelect and explain. \nA. Vocalis, B. Posterior cricoarytenoid, C. Lateral cricoarytenoid, D. Interarytenoid', 'role': 'user'}, {'content': 'Answer: D \nExplanation: - Interarytenoid muscle is an unpaired muscle in the centre between the 2 arytenoid cailages and is innervated bidirectionally.', 'role': 'assistant'}]