This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous system, Subject name: Pharmacology
[{'content': 'Endogenous opioid peptide includes: \nSelect and explain. \nA. Encephalin, B. Endorphins, C. Dynorphins, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: all the above Endorphins, enkephalins, and dynorphins are all endogenous compounds. These are having morphine like actions. These opiod peptides modulates pain perception, mood, hedonic, and motor behaviour, emesis, pitiutary hormone release and git motility. Ref KD Tripathi 8th ed', 'role': 'assistant'}]