This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Physiology
[{'content': 'The neurotransmitter at the central synapse of stretch reflex circuit is: \nSelect and explain. \nA. Glycine, B. Glutamate, C. Substance P, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (B) Glutamate # Neurotransmitter at central synapse of stretch reflex circuit is Glutamate.> The sense organ for stretch reflex is muscle spindle.> Stretch reflex is a monosynaptic reflex.', 'role': 'assistant'}]