A patient undergoing cancer chemotherapy gets ondansetron for prophylaxis of drug-induced nausea and vomiting. Which of the following best describes this drug's main mechanism of action in this setting?
Anonymous Quiz
Activates p-type opioid receptors in the chemoreceptor trigger zone
Blocks central serotonin (5-HT3) receptors
Blocks dopamine receptors
d-Blocks histamine H₁ receptors in the brainstem and inner ear
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