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': 'The nasal septum is supplied by all the following except: \nSelect and explain. \nA. Nasopalatine nerve, B. Posterior ethmoidal nerve, C. Pterygopalatine ganglion, D. Nasociliary nerve', 'role': 'user'}, {'content': 'Answer: B \nExplanation: General sensory nerves, arising from trigeminal nerve, are distributed to whole of the septum.\n\t\nThe anterosuperior part of the septum is supplied by the internal nasal branches of the anterior ethmoidal\xa0 nerve.\nIts anteroinferior part is supplied\xa0 by anterior superior alveolar nerve.\nThe posterosuperior part is supplied by the medial posterior superior nasal branches of the pterygopalatine ganglion.\nThe posteroinferior part is supplied by the nasopalatine\xa0 branch of the pterygopalatine ganglion. lt is the main nerve.\n\n\nSpecial sensory nerves or olfactory nerves are confined to the upper part or olfactory area.', 'role': 'assistant'}]