<prompt> All are true about secretin exceptInhibits gastric emptyingIncreases bicarbonate rich pancreatic secretionPotentiates action of CCKses bile salt bile acids  <response>: Actions of secretin: Increases bicarbonate-rich pancreatic secretion. Stimulates bile secretion. Potentiates effect of CCK on pancreas. It causes contraction of pyloric sphincter delaying gastric emptying. Ref: Medical physiology, Indu Khurana 