Neurochemistry & Psychopharmacology

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Endogenous
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Produced within the body; internal substance
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Exogenous
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Substances from external sources
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Gap Junction
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-Electrical Synapse >Transmit signals more rapidly than chemical synapses
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Exocytosis
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Vesicles release neurotransmitters into the synaptic cleft
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Ionotropic receptors
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Ligand-gated ion channels; response when neurotransmitter molecule binds *Change shape or open or close
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Metabotropic Receptors
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Alter chemical reactions in the cell; *System of second messengers to open an ion -May start chemical reactions to alter gene expression
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7 Steps in Neurotransmitter Action
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1. Neurotransmitter molecules are synthesized 2.

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