Transmitter Reabsorption

We have already emphasized the necessity of rapid removal of neurotransmitter molecules after neurotransmission and described five ways in which this imperative could, and may in some cases, be done. One of these is uptake by astrocytic processes. The presence of these around synapses, in places close and in others not distant (see preceding discussion), facilitates the regulation of transmitter uptake and inactivation of synaptic activity. The entities removed by these processes are transmitters (notably glutamate, but including GABA and serotonin), ions (notably K+), and toxins (e.g., metals).

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