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- Subject
- Pharmacologymedical-mcqs › pharmacology
- Published
- 29 Jul 2019
- Last updated
- 28 May 2026
Explanation
Nausea and vomiting induced by opioid analgesics occur due to activation of the chemoreceptor trigger zone (CTZ), which detects chemical changes in the blood and initiates the vomiting reflex. Other regions like the limbic system, vomiting center, or opioid receptors in the GI tract are not primarily responsible for this effect.
More Pharmacology MCQs
Practice related questions from the same subject.
- 1.For which condition is aminocaproic acid primarily prescribed?
- 2.Identify the category of drugs that primarily undergo microsomal oxidation during metabolism:
- 3.Which characteristic best describes the sublingual route of drug administration?
- 4.Which statement accurately describes the action of potassium channel openers?
- 5.Which medication lowers blood pressure by targeting the vasomotor centers within the central nervous system?
- 6.Why is Indomethacin generally favored over Colchicine for treating an acute gout flare?
- 7.Which medication, when used long-term for seizure management, is known to cause facial coarsening, excessive hair growth, gum enlargement, and bone softening?
- 8.Which of the following drugs is frequently associated with cardiac toxicity as a side effect?