This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Brain , Subject name: Anatomy
[{'content': 'Dorsal surface of pons is related with? \nSelect and explain. \nA. Trochlear nucleus, B. Motor nucleus of vagus, C. Hypoglossal, D. Facial', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The pons can be broadly divided into two pas: the basilar pa of the pons(ventral) and the pontine tegmentum( dorsal)The pontine tegmentum contains nuclei of the cranial nerves -5,6,7,8 and their associated fibre tracts, the pontine reticular formation, the mesopontine cholinergic system, the laterodorsal tegmental nucleus, and the respiratory centres - the pneumotaxic centre and the apneustic centre.Trochlear nucleus is in the midbrain whereas hypoglossal and vagal nuclei in the medulla.(Reference: vishram Singh textbook of clinical neuroanatomy second edition pg 80)', 'role': 'assistant'}]