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
[{'content': 'Temperature regulation is chiefly under the control of:September 2007 \nSelect and explain. \nA. Midbrain, B. Pons, C. Medulla, D. Hypothalamus', 'role': 'user'}, {'content': 'Answer: D \nExplanation: 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', 'role': 'assistant'}]