Question

what are chemicals called that mimic the actions of neurotransmitters in the brain?
o a. antagonist
o b. agonist
o c. neurotransmitters
o d. blood brain barrier

Explanation:

Agonists are chemicals that mimic the actions of neurotransmitters in the brain by binding to the same receptors as the neurotransmitters and activating them. Antagonists block the actions of neurotransmitters. Neurotransmitters are the natural - signaling molecules themselves, not the mimicking chemicals. The blood - brain barrier is a physiological structure that regulates what substances can enter the brain.

Answer:

B. Agonist