Professor Achidi is lecturing about drug mechanisms. She tells the class that a substance that increases the effects of a neurotransmitter is considered to be a(n) _____.

Question

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An agonist is a substance that increases the effect of a neurotransmitter. It activates the receptors of the neurotransmitter and produces a biological response similar to that of the neurotransmitter. For example, drugs like Xanax and Valium that enhance the effect of GABA, an inhibitory neurotransmitter in the brain, are considered agonists.

Professor Achidi Is Lecturing About Drug Mechanisms