Luisa is diagnosed with a medical disorder caused by too much dopamine activity in certain brain regions. Her doctor is likely to prescribe a dopamine ________________ to treat her
A) reuptake inhibitor.
B) stimulator
C) agonist.
D) antagonist.
Answer: D
Rationale: Drugs classified as antagonists inhibit neurotransmitter activity, while agonists are drugs that enhance or mimic the effects of a neurotransmitter's action. Because Luisa suffers from too much dopamine activity, her doctor would prescribe an antagonist. A reuptake inhibitor would not be prescribed because inhibiting the reuptake of dopamine actually increases its effect.
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