GABA:
A) increases the firing of cells.
B) decreases the firing of cells.
C) is very slowly reabsorbed.
D) All of the answers are correct.

Question

Quizplus · Accepted Answer

GABA (gamma-aminobutyric acid) is an inhibitory neurotransmitter, which means it decreases the firing of cells. It does this by binding to specific receptors on the postsynaptic membrane, causing an influx of negatively charged chloride ions that hyperpolarize the cell and make it less likely to fire. GABA is also rapidly reabsorbed by neurons and glial cells, terminating its signal.