QuestionSBA
QuestionChoice
Haloperidol blocks dopamine receptors in the central nervous system, specifically D2 receptors.
10005546
a
Dopamine receptors
QuestionChoice
Anti-emetics, such as cyclizine are histamine receptor antagonists. They also have no antipsychotic effect.
10005547
b
Histamine receptors
QuestionChoice
Anti-emetics such as Ondansetron are 5HT3 receptor antagonists, and have no antipsychotic effect.
10005548
c
5HT3 receptors
QuestionChoice
These are not involved in nausea and vomiting and so there is no antiemetic that acts on the GABA receptors. Benzodiazepines (e.g. diazepam) act on GABA receptors, as does alcohol.
10005550
e
GABA receptors
QuestionChoice
Antimuscarinics, such as hyoscine hydrobromide act on muscarinic receptors. They are used as anti-emetics, but also to reduce respiratory secretions (especially in palliative care).
10005549
d
Muscarinic acetylcholine receptors
Concept
Chapter
2693
4422
End of Life Care Medications
Topic
191
Geriatrics
13656
Haloperidol is an antipsychotic but is sometimes used in palliative care as an anti-emetic, which receptors in the brain does this drug work on?
a