This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pharmacology, Subject name: Pharmacology
5HT3 receptors belong to which of the following group of receptors? 
Select and explain. 
A. Metabotropic, B. Fastest acting receptors, C. Slowest acting receptors, D. Enzymatic receptors
B: Fastest acting receptors
Answer: B: Fastest acting receptors 
Explanation: 5HT3 receptors among serotonin receptors are the only ion channel receptors among serotonin group Ion channel receptors are fastest acting receptors Intracellular -slowest acting Ref: HL sharma KK sharma 3rd edition pg no: 62