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Chemical synapse
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===Termination=== After a neurotransmitter molecule binds to a receptor molecule, it must be removed to allow for the postsynaptic membrane to continue to relay subsequent [[Excitatory postsynaptic potential|EPSP]]s and/or [[IPSP]]s. This removal can happen through one or more processes: * The neurotransmitter may diffuse away due to thermally-induced oscillations of both it and the receptor, making it available to be broken down metabolically outside the neuron or to be reabsorbed.<ref name="Sherwood">Sherwood L., stikawy (2007). Human Physiology 6e: From Cells to Systems</ref> * Enzymes within the subsynaptic membrane may inactivate/metabolize the neurotransmitter. * [[Reuptake]] pumps may actively pump the neurotransmitter back into the presynaptic [[axon terminal]] for reprocessing and re-release following a later action potential.<ref name="Sherwood"/>
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