The pyloric sphincter controls the passage of partially digested food ( chyme ) from the stomach into the duodenum where peristalsis takes over to move this through the rest of the intestines.
12.
When the pyloric sphincter, or valve opens, chyme enters the duodenum where it mixes further with digestive enzymes from the pancreas, and then passes through the small intestine, where digestion continues.
13.
Peristaltic waves occur in an attempt to decompress the intestine, and the strong contractions of the intestinal muscles push the contents backwards through the pyloric sphincter into the stomach, where they are then vomited.
14.
In Secretin # Discovery, it is written as " It was known that the pancreas secreted digestive juices in response to the passage of food ( chyme ) through the pyloric sphincter into the duodenum ."
15.
Two sphincters keep the contents of the stomach contained; the lower esophageal sphincter ( found in the cardiac region ), at the junction of the esophagus and stomach, and the pyloric sphincter at the junction of the stomach with the duodenum.
16.
Secretin is released into circulation and / or intestinal lumen in response to low duodenal pH that ranges between 2 and 4.5 depending on species; the acidity is due to hydrochloric acid in the chyme that enters the duodenum from the stomach via the pyloric sphincter.
