This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Physiology
Sleep center is located in 
Select and explain. 
A. Basal ganglia, B. Medulla, C. Hypothalamus, D. Cerebellum
C: Hypothalamus
Answer: C: Hypothalamus 
Explanation: Ans. (c) Hypothalamus(Ref: Ganong, 25th ed/p.273)Preoptic nucleus of hypothalamus particularly ventrolateral preoptic nucleus promotes sleep