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
Nucleus of oculomotor nerve is in 
Select and explain. 
A. Midbrain, B. Pons, C. Medulla, D. Thalamus
A: Midbrain
Answer: A: Midbrain 
Explanation: The oculomotor nucleus is located in the central grey matter of midbrain at the level of superior colliculus. The oculomotor nucleus is in the ventromedial pa. The Edinger - Westphal nucleus (visceral oculomotor nucleus) is located dorsal to the rostral two-thirds of main oculomotor nucleus. (Ref: Vishram Singh textbook of clinical neuroanatomy, second edition pg-85)