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
Ketamine acts an which receptors 
Select and explain. 
A. GAGA, B. Muscarinic, C. 5-HT4, D. NMDA
D: NMDA
Answer: D: NMDA 
Explanation: Ans. is 'd' i.e., NMDA See explanation- 5 of session- 2 of Anaesthesia of All India 2014-15 pattern of this book