This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Dexmedetomidine acts on which receptor for its analgesic action ? 
Select and explain. 
A. 5HT2A, B. D2, C. a2A, D. D5
C: a2A
Answer: C: a2A 
Explanation: Ans. is'c' i.e., a2ADexmeditomidine is centrally active selective alpha (a2) agonist that has been introduced for sedating critically iil ventilated patients in intensive care units.