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': 'Buprenorphine on opioid receptors is: \nSelect and explain. \nA. Pure agonist, B. Pure antagonist, C. Paial agonist, D. None', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Pure morphine like opioids in general acts on Mu and K receptors. Mixed agonists-antagonists: Nalorphine Butorphanol Pentazocine Paial agonists: Buprenorphine Pure competitive opioid antagonists Naloxone Naltrexone Nalmefene Ref: K.D.T 6th Ed Page 464.', 'role': 'assistant'}]