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Home Q & A Board Biology-Related Homework Help Medicine Pharmacology (Moderator: DelightfulMind)
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aenriquez17 aenriquez17
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6 years ago
A patient has a drug order for prochlorperazine (Compazine) for management of nausea and vomiting. Review the following statements, and select the one that most accurately describes the action of the drug.
 
  a. It blocks the action of serotonin in the brain.
  b. It blocks the effects of dopamine in the chemoreceptor trigger zone.
  c. It stimulates relaxation of smooth muscle in the gastrointestinal (GI) tract.
  d. It enhances release of acetylcholine at nerve endings in the mesentery.
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#1
6 years ago
ANS: B
The phenothiazines, such as prochlorperazine, suppress nausea and vomiting by blockade of do-pamine receptors in the chemoreceptor trigger zone (CTZ).
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