Most neurotransmitters can have either an excitatory or an inhibitory effect. In contrast, which of the following neurotransmitters always has an inhibitory effect?
A)GABA
B)Serotonin
C)Dopamine
D)Norepinephrine
E)Glutamate

Question

Quizplus · Accepted Answer

GABA (gamma-aminobutyric acid) is the primary inhibitory neurotransmitter in the brain, consistently having an inhibitory effect on neurons, reducing neuronal excitability throughout the nervous system.

Most Neurotransmitters Can Have Either an Excitatory or an Inhibitory