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: Pharmacology
[{'content': 'Site of action of vecuronium is - \nSelect and explain. \nA. Cerebrum, B. Reticular formation, C. Motor neurone, D. Myoneural junction', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Myoneural junction Vecuronium is a nondepolarizing (competitive) neuromuscular blocker. The site of action is the end plate of skeletal muscles (End plate is thickened poion of muscle membrane at neuromuscular junction).", 'role': 'assistant'}]