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: Physiology
Temperature regulation is chiefly under the control of:September 2007 
Select and explain. 
A. Midbrain, B. Pons, C. Medulla, D. Hypothalamus
D: Hypothalamus
Answer: D: Hypothalamus 
Explanation: Ans. D: HypothalamusThermoregulation in both ectotherms and endotherms is controlled mainly by the preoptic area of the anterior hypothalamus.Such homeostatic control is separate from the sensation of temperature