This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pharmacology, Subject name: Pharmacology
[{'content': 'Which of the following are physiological antagonists \nSelect and explain. \nA. Adrenaline and Isoprenaline, B. glucagon and insulin, C. Isoprenaline and Propranolol, D. All of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Adrenalin and histamine and glucagon, insulin are physiological antagonists Physiological antagonism - opp effect on the same physiological system by two drugs glucagon increases blood glucose, insulin decreases- blood glucose adrenaline- bronchodilatation histamine- broncho constriction Ref KD Tripathi 8th ed.', 'role': 'assistant'}]