This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous system, Subject name: Pharmacology
Compared to the other antidepressant drugs miazapin has the distinct ability to act as an antagonist of: 
Select and explain. 
A. Beta receptors, B. D2 receptors, C. Alpha 2 receptors, D. 5-HT receptors
C: Alpha 2 receptors
Answer: C: Alpha 2 receptors 
Explanation: Ref: KDT 8th ed Miazapine blocks presynaptic [?]2 receptors on NA and 5-HT neurons. This increases the release of both NA and 5-HT. It also inhibits 5-HT2 and 5-HT3 receptors.