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: Anaesthesia
Action of which anesthetic agent is through NMDA receptors? 
Select and explain. 
A. Xenon, B. NO, C. Succinylcholine, D. Etomidate
A: Xenon
Answer: A: Xenon 
Explanation: Ans. is 'a' i.e., Xenon Xenon It exes anaesthetic action by non competitive blockade of NMDA receptors. Xenon has been used as a general anesthetic. Xenon interacts with many different receptors and ion channels and like many theoretically