Which hormone is secreted in response to acidic chyme from the stomach?

Glands in the duodenum or small intestine secrete several hormones including secretin, cholecystokinin (CCK) and gastric inhibitory peptide (GIP). Secretin is a hormone secreted by the duodenal and jejunal mucosa when acid chyme enters the intestine. It stimulates secretion of pancreatic juice and to a lesser extent bile and intestinal secretion.