This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Pharmacology
[{'content': 'The mechanism of action of haloperidol is the blockage of \nSelect and explain. \nA. Serotonin receptor, B. GABA receptor, C. Dopamine receptor, D. Adrenergic receptor', 'role': 'user'}, {'content': "Answer: C \nExplanation: (C) Dopamine receptor # Haloperidol, Trifluperidol, Droperidol, Penfluridol are Butyrophenones and act as antipsychotic drugs.> All antipsychotic (except clozapine like) have potent dopamine D2 receptor blocking action.> So, it is clear that Haloperidol act by blocking dopamine receptor.> Uses of haloperidol are in acute schizophrenia, Huntington's disease.> Clozapine has significant 5-HT2 and at blocking action.> Dopaminergic blockade in basal ganglia cause extrapyramidal sign while that in CTZ is responsible for antiemel action.", 'role': 'assistant'}]