Difference between revisions of "Gut Endocrine Function - Anatomy & Physiology"
Jump to navigation
Jump to search
Line 8: | Line 8: | ||
!Action | !Action | ||
|- | |- | ||
− | |Cholecystokinin | + | |<font color=red>Cholecystokinin</font> |
|Duodenum | |Duodenum | ||
|Stimulates digestion of fat and protein by causing release of digestive enzymes and bile from the pancreas and gall bladder. | |Stimulates digestion of fat and protein by causing release of digestive enzymes and bile from the pancreas and gall bladder. |
Revision as of 08:56, 3 July 2008
The Alimentary System secretes hormones which have various functions within the Gatrointestinal tract, liver, gall bladder and pancreas.
Hormone | Site of Secretion within GIT | Action |
---|---|---|
Cholecystokinin | Duodenum | Stimulates digestion of fat and protein by causing release of digestive enzymes and bile from the pancreas and gall bladder. |
Gastrin | G-Cells in Stomach and duodenum | Stimulates Parietal cells in the stomach to secrete HCl and Chief cells to secrete pepsinogen. |
Gastric Inhibitory Peptide | Duodenum and Jejunum | Inhibits gastric motility and HCl secretion in the stomach, induces insulin secretion. |
Ghrelin | Stomach and Pancreas | Increases food intake (by stimulating hunger) at the level of the hypothalamus |
Secretin | Crypts of Leiberkuhn in the Duodenum | Causes secretion of bicarbonate to buffer the pH of the chyme entering the small intestine. Also triggers insulin release. |
Somatostatin | Gastric glands of the stomach | Inhibits release of gastrin and HCl from the stomach, inhibits secretin and cholecystokinin release from the duodenum and inhibits release of glucagon from the pancreas. |