Question

It acts as only inhibitory neurotransmitter

• A. Dopamine
• B. Glycine
• C. Serotonin
• D. Acetylcholine

Hint:

Glycine helps in regulating neural activity by inhibiting excessive neuronal firing.

Answer 1

The Correct Option is B

Glycine is a major inhibitory neurotransmitter in the central nervous system, especially in the spinal cord and brainstem. It works by hyperpolarizing neurons, making it less likely for them to fire action potentials. In contrast, dopamine, serotonin, and acetylcholine also have excitatory effects in certain contexts.
Final Answer:
Glycine.