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
The neurotransmitter at the central synapse of stretch reflex circuit is: 
Select and explain. 
A. Glycine, B. Glutamate, C. Substance P, D. None of the above
B: Glutamate
Answer: B: Glutamate 
Explanation: (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.