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21 Cards in this Set
- Front
- Back
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Gastrin is secreted by which type of cells which are located where?
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G cells, antrum of stomach
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gastrin does what (3)
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incr H+ secretion, incr growth of gastric mucosa, incr gastric motility
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gastrin is incr by what (4) and decr by what (2)
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incr by stomach distension, AA, peptides and vagal stimulation; decr by low stomach pH and somatostatin
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CCK is secreted by which type of cells which are located where?
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I cells, duodenum and jejunum
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CCK does what (3)
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incr pancreatic secretion and gallbladder contraction, decr gastric emptying
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CCK is released in response to what (2)
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FAs and AAs
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secretin is secreted by which type of cells which are located where?
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S cells, duodenum
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secretin does what (3)
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incr pancreatic HCO3 secretion and bile secretion, decr gastric acid secretion
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secretin is released in response to what (2)
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acid and FA's in the duodenum
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somatostatin is secreted by which type of cells which are located where?
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D cells, pancreatic islets and GI mucosa
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somatostatin does what
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inhibits everything
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somatostatin is incr (1) and decr (1) by what
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incr by acid, decr be vagal stimulation
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GIP is secreted by which type of cells which are located where?
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K cells, duodenum and jejunum
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GIP does what (2)
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decr gastric H+ secretion, incr insulin release
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GIP is released in response to what (3)
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FA's, AA's and oral glucose
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VIP is secreted by which type of cells which are located where?
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PNS ganglia in sphincters, gallbladder and SI
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VIP does what (2)
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incr intestinal water and electrolyte secretion and incr relaxation of intestinal SM and sphincters
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VIP release is incr (2) and decr (1) by what
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incr by distension and vagal stimulation; decr by adrenergic input
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gastric acid is secreted by what?
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parietal cells in the body of the stomach
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gastric acid secr is incr by what (3) and decr by what (4)
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incr by histamine (H2), ACh (M3) and gastrin (CCKb); decr by somatostatin, GIP, PG's and secretin
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what controls pepsin release (2)
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incr by vagal stimulation and local acid
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