All except one are inhibitory neurotransmitters: (A) Acetylcholine, (B) Glutamate, (C) Norepinephrine, (D) Glycine
Answer is B. major inhibitory neurotransmitters include serotoninand gamma-aminobutyric acid(GABA). Some neurotransmitters, such as acetylcholine and dopamine, can create both excitatory and inhibitory effects depending upon the type of receptors that are present.