PSYCH 3313 Chapter Notes - Chapter 4: Brainstem, Indolamines, Barbiturate
19 Sep 2016
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Neurotransmitters a chemical messenger that communicates across a synapse (directed) Neuromodulators a chemical messenger that communicates with target cells more distant than the synapse by diffusing away from the point of release (nondirected) Neurohormones a chemical messenger that communicates with target cells at great distance, often by traveling through the circulation (nondirected) Interact only with other cells that have specialized receptor. The substance must be present within a presynaptic cell. The substance is released in response to presynaptic depolarization. The substance interacts with specific receptors on the postsynaptic: types of neurochemicals. Small molecules one of a group of neurochemicals that includes amino acids and amines. Amino acids an essential component of proteins. Neuropeptides a peptide that acts as a neurotransmitter, a neuromodulator or a neurohormone. Gasotransmitters a gas such as nitric oxide (no) that. Appear to play vital role in neural signaling.
