Difference between revisions of "Gut Endocrine Function - Anatomy & Physiology"
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| − | + | <big><center>[[Endocrine System - Anatomy & Physiology|'''BACK TO ENDOCRINE SYSTEM ANATOMY & PHYSIOLOGY''']]</center></big> | |
| − | + | The Alimentary System secretes hormones which have various functions within the Gatrointestinal tract, liver, gall bladder and pancreas. | |
| − | pancreas | ||
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!Hormone | !Hormone | ||
!Site of Secretion within GIT | !Site of Secretion within GIT | ||
!Action | !Action | ||
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| − | |<font color= | + | |<font color=red>Cholecystokinin</font> |
| − | | | + | |Duodenum |
| − | |Stimulates digestion of fat and protein by causing release of digestive enzymes and bile from the | + | |Stimulates digestion of fat and protein by causing release of digestive enzymes and bile from the pancreas and gall bladder. |
|- | |- | ||
| − | | | + | |Gastrin |
| − | |G-Cells in | + | |G-Cells in Stomach and duodenum |
| − | |Stimulates Parietal cells in the | + | |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 | + | |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 | + | |Increases food intake (by stimulating hunger) at the level of the hypothalamus |
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| − | | | + | |Secretin |
| − | |Crypts of Leiberkuhn in the | + | |Crypts of Leiberkuhn in the Duodenum |
| − | |Causes secretion of bicarbonate to buffer the pH of the chyme entering the | + | |Causes secretion of bicarbonate to buffer the pH of the chyme entering the small intestine. Also triggers insulin release. |
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| − | | | + | |Somatostatin |
| − | |Gastric glands of the | + | |Gastric glands of the stomach |
| − | |Inhibits release of gastrin and HCl from the | + | |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. |
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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. |