This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuroanatomy, Subject name: Anatomy
[{'content': 'Safety muscle of larynx is: \nSelect and explain. \nA. Aryepiglotticus, B. Cricoarytenoid, C. Thyroarytenoid, D. Posterior cricoarytenoid', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D Posterior cricoarytenoidRef: Dhingra, 5thpg. 300* Posterior cricoarytenoid is the most important muscle of the larynx as it is the only abductor of vocal cord.* Paralysis of posterior cricoarytenoid will lead to adduction of vocal cord, which may lead to dyspnea resulting in death.', 'role': 'assistant'}]