After g-aminobutyric acid (GABA) is released from the pre-synaptic neuron, GABA diffuses across the synaptic cleft to bind to and activate post-synaptic GABA receptors. Termination of GABA neurotransmission is then brought about:

Physiology Test Question

After γ-aminobutyric acid (GABA) is released from the pre-synaptic neuron, GABA diffuses across the synaptic cleft to bind to and activate post-synaptic GABA receptors. Termination of GABA neurotransmission is then brought about:

	(A) by enzymatic breakdown of GABA by extracellular enzymes present in the synaptic cleft.
	(B) by binding of GABA to proteins present in the synaptic cleft.
	(C) by transport of GABA out of the synapse and into the pre-synaptic axon terminal or surrounding glial cells via the activity of GABA transporters (GATs)

Checking your answer...