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. | |
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− | + | {| border="1" cellpadding="10" cellspacing="0" | |
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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. |
|- | |- | ||
− | |<font color= | + | |<font color=red>Gastrin</font> |
− | |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. |
|- | |- | ||
− | |<font color= | + | |<font color=red>Gastric Inhibitory Peptide</font> |
− | | | + | |Duodenum and Jejunum |
− | |Inhibits gastric motility and HCl secretion in the | + | |Inhibits gastric motility and HCl secretion in the stomach, induces insulin secretion. |
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− | |<font color= | + | |<font color=red>Ghrelin</font> |
− | | | + | |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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− | |<font color= | + | |<font color=red>Secretin</font> |
− | |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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− | |<font color= | + | |<font color=red>Somatostatin </font> |
− | |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 08:57, 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. |