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': 'Middle superior alveolar nerve is a branch of: \nSelect and explain. \nA. Mandibular division of trigeminal nerve, B. Palatine division of maxillary nerve, C. Anterior nasal division of maxillary nerve, D. Inferior alveolar nerve', 'role': 'user'}, {'content': 'Answer: B \nExplanation: This question doesn’t have a proper answer and the most suitable option has been chosen.\xa0\n\n\xa0Middle superior alveolar nerve supplies the palatal teeth on the maxilla and hence can be stated as the palatal branch of maxillary nerve.\xa0\n\xa0It supplies teeth number 4, 5 (premolars) and 6 (first molar).\xa0\n\xa0It also supplies the lining of maxillary air sinus.\xa0\n\xa0It is given by the infraorbital nerve, while running in the infraorbital groove.\n\xa0Superior\xa0alveolar nerves\xa0 (branch of\xa0 maxillary nerve supply\xa0 the upper\xa0 (maxillary)\xa0 teeth,\xa0 whereas lower\xa0 (mandibular)\xa0 teeth\xa0 are supplied by the inferior alveolar nerve (branch of mandibular nerve).\xa0\n\xa0Superior alveolar nerves are three in number and make superior dental plexus to supply the upper teeth: Posterior, middle and\xa0anterior.\xa0\n\xa0Posterior superior alveolar nerve is a branch of maxillary nerve, whereas middle and anterior are given by the infraorbital nerve (branch of maxillary nerve).\xa0\n\xa0Middle superior alveolar block is given while operating upon upper premolars.', 'role': 'assistant'}]