<prompt> Inhibitory neurotransmitter in CNS Spinal cord:Glutamic acidGlycineHistidineGABA  <response>: Glutamateexcitatory neurotransmitter in CNS.Glycine Inhibitory neurotransmitter in CNS. Causes hyperpolarization by increasing chloride ion conductance.GABA Inhibitory neurotransmitter in brain. 