Inhibitory neurotransmitter of central nervous system is:: (A) Aspartate, (B) Gamma-aminobutyric acid, (C) Glutamate, (D) Acetylcholine
Answer is B. Ans. B. Gamma-aminobutyric acidGAMMA-AMINOBUTYRIC ACID is an inhibitory neurotransmitter found in brain and retina which is responsible for presynaptic inhibition.