This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Brainstem lesions and blood supply of CNS, Subject name: Anatomy
[{'content': 'All of the following structures are involved in Weber syndrome EXCEPT \nSelect and explain. \nA. Oculomotor nerve roots, B. Coicobulbar tracts, C. Cerebellar peduncles, D. Coicospinal tract', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Weber syndrome is a lesion of the anterior midbrain at the level of superior colliculus involves: Oculomotor nerve Ipsilateral downward & laterally deted eye Substantia nigra Contralateral parkinsonism Coicobulbar fibers Coicospinal tract', 'role': 'assistant'}]