Secretin (Noun)
Meaning
A gastrointestinal hormone that stimulates the secretion of water and bicarbonate from the pancreas and bile ducts whenever the stomach empties too much acid into the small intestine.
Classification
Nouns denoting body parts.
Examples
- The hormone secretin plays a crucial role in regulating the pH levels in the small intestine by stimulating the pancreas to secrete bicarbonate.
- When the stomach empties too much acid into the small intestine, secretin is released to help neutralize the acidity.
- The discovery of secretin by William Bayliss and Ernest Starling in 1902 marked the beginning of the study of gastrointestinal hormones.
- Secretin is released by specialized cells in the duodenum and jejunum in response to the presence of acidic chyme from the stomach.
- In addition to its effects on pancreatic and bile duct secretion, secretin also inhibits the secretion of gastric acid and slows down gastric emptying.