This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pituitary, Subject name: Physiology
[{'content': 'The hormone associated with cold adaption is : \nSelect and explain. \nA. Growth hormone., B. Thyroxine., C. Insulin., D. Melanocyte Stimulating Hormone.', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e. Thyroxine Hypothalamus is responsible for thermoregulationWhen a person is exposed to cold, thermoregulation occurs in two phases -Immediate-It is mediated through autonomic nervous system | | Heat productionDelayed - It occurs through endocrine systemNote: Due to hypothalamic stimulation horripilation (standing up of body hair) is seen. This causes heat conservation. But this mechanism is of no major importance in man due to scantiness of hair.", 'role': 'assistant'}]