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Pain and heat receptors have DRG axons carrying noxious signals to the dorsal horn of the spinal cord.
Pain and heat receptors have DRG axons carrying noxious signals to the dorsal horn of the spinal cord.
These axons synapse on internucial neurons that send a short axon to flexor motor neurons.
This excitatory interneuron produces the withdrawal reflex by activating the flexor muscles and via inhibitory neurons relaxing the extensor muscles.