The amino acid that operates at most inhibitory synapses in the brain is ________.
A) acetylcholine
B) endorphin
C) nitric oxide
D) gamma-aminobutyric acid (GABA)

Question

Quizplus · Accepted Answer

The question is asking for the amino acid that operates at most inhibitory synapses in the brain. The correct answer is gamma-aminobutyric acid (GABA) as it is the most abundant inhibitory neurotransmitter in the brain and works to decrease the activity of neurons in the brain. A) Acetylcholine is a neurotransmitter that is involved in muscle movement and memory. B) Endorphins are neuropeptides that are involved in pain relief and feelings of pleasure. C) Nitric oxide is a gas that is involved in the regulation of blood pressure and the immune system.

The Amino Acid That Operates at Most Inhibitory Synapses in the Brain