This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Unknown
[{'content': 'Tensors of the vocal cords are? \nSelect and explain. \nA. Posterior cricoarytenoid , internal interarytenoid, B. Lateral cricothyroid, internal interarytenoid, C. Thyroarytenoid, internal interarytenoid, D. Cricothyroid and internal thyroarytenoid', 'role': 'user'}, {'content': 'Answer: D \nExplanation: ANSWER: (D) Cricothyroid and internal thyroarytenoid REF: Dhingra 4th ed p. 259 Intrinsic muscles acting on vocal cords: Abductors: Posterior cricoarytenoid Adductors: Lateral cricoarytenoid, Interarytenoid (transverse arytenoid) Thyroarytenoid (external part) Tensors: Cricothyroid, Vo calls (internal part of thyroarytenoid) Intrinsic muscles acting on laryngeal inlet: Openers of laryngeal inlet: Thyroepiglottic (part of thyroarytenoid) Closers of laryngeal inlet: Interarytenoid (oblique part), Aryepiglottic (posterior oblique part of inter arytenoid)', 'role': 'assistant'}]