<prompt> 5HT3 receptors belong to which of the following group of receptors?MetabotropicFastest acting receptorsSlowest acting receptorsEnzymatic receptors  <response>: 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 