Chemical messengers that act on neurons in the immediate vicinity of their release are known as

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Neurotransmitters act on neurons in the immediate vicinity and are released at synaptic junctions. Neuromodulators can act on multiple neurons and have more widespread effects. Neurohormones are released into the bloodstream and can act at distant target sites. Neuroenzymes are enzymes involved in neural signaling and not chemical messengers themselves.

Chemical Messengers That Act on Neurons in the Immediate Vicinity