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: Anatomy
[{'content': 'Injury of which of these nerve cause vocal cord paralysis? \nSelect and explain. \nA. Recurrent laryngeal, B. External laryngeal, C. Internal laryngeal, D. Superior laryngeal', 'role': 'user'}, {'content': 'Answer: A \nExplanation: When both recurrent laryngeal\xa0 nerves are interrupted,\xa0 the vocal cords lie in the cadaveric position in between abduction and adduction and phonation is completely lost. Deep breathing also becomes\xa0difficult through the partially\xa0opened glottis.\nWhen only one recurrent laryngeal nerve is paralysed, the opposite vocal cord compensates for it and phonation is possible but there is hoarseness of voice.\xa0 There is failure of forceful explosive part of voluntary and reflex coughing.\n\nBDC Head and Neck 6th Ed P:258', 'role': 'assistant'}]