Search results
Results From The WOW.Com Content Network
Increases gastric emptying and small bowel motility Neuropeptide Y: Enteric nerves: Regulation of intestinal blood flow Neurotensin: Ileum: Affects gut motility; increases jejunal and ileal fluid secretion Pancreatic polypeptide: Pancreas: Inhibits pancreatic and biliary secretion Peptide YY: Colon: Inhibits food intake Somatostatin: Stomach ...
An enterogastrone is any hormone secreted by the mucosa of the duodenum in the lower gastrointestinal tract in response to dietary lipids that inhibits the caudal (or "forward, analward") motion of the contents of chyme. The function of enterogastrone is almost the same as gastric inhibitor peptide, it inhibits gastric secretion and motility of ...
It can also be stimulated by a pH of 3-4 in the duodenum and by a pH of 1.5 in the stomach. Upon initiation of the reflex, the release of gastrin by G-cells in the antrum of the stomach is shut off. This in turn inhibits gastric motility and the secretion of gastric acid . [1]
Gastrointestinal physiology is the branch of human physiology that addresses the physical function of the gastrointestinal (GI) tract.The function of the GI tract is to process ingested food by mechanical and chemical means, extract nutrients and excrete waste products.
50-60% of total gastric acid secretion occurs during this phase. The gastric phase is a period in which swallowed food and semidigested protein (peptides and amino acids) activate gastric activity. Ingested food stimulates gastric activity in two ways: by stretching the stomach and by gastric contents stimulating receptors in the stomach. [2]
The gastrocolic reflex or gastrocolic response is a physiological reflex that controls the motility, or peristalsis, of the gastrointestinal tract following a meal. It involves an increase in motility of the colon consisting primarily of giant migrating contractions, in response to stretch in the stomach following ingestion and byproducts of digestion entering the small intestine. [1]
Also, the secretion of secretin is increased by the products of protein digestion bathing the mucosa of the upper small intestine. [22] Secretin release is inhibited by H 2 antagonists, which reduce gastric acid secretion. As a result, if the pH in the duodenum increases above 4.5, secretin cannot be released. [23]
PYY exerts its action through NPY receptors; it inhibits gastric motility and increases water and electrolyte absorption in the colon. [18] PYY may also suppress pancreatic secretion. It is secreted by the neuroendocrine cells in the ileum and colon in response to a meal, and has been shown to reduce appetite. PYY works by slowing the gastric ...