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32 Cards in this Set
- Front
- Back
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visceral pain sensation travels along the ______ nervous system
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sympathetic
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The _______ nervous system is inhibitory of GI sphincters
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sympathetic
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the upper esophagus has what type of muscle?
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straited m.
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What are the layers of the duodenal wall medial-lateral?
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mucosa, submucosa, muscularis externa, serosa
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auerbach's plexus is found where?
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longitudinal muscle
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meisner's plexus is found where?
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submucosa
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_________ have mostly post-ganglionic synapses in the gut
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sympathetics
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what GI hormones are found in the antrum?
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Gastrin
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What GI hormones are found in the ileum
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CCK
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What GI hormones are found in the jejunum?
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GIP, CCK, Motilin
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In what part of the GI will you find all of the GI hormones?
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duodenum
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What triggers the release of motilin?
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vagal stimulation
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What triggers the release of gastrin?
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protein products, distention of stomach, vagal stimulation
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What triggers the release of CCK?
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lipids and protein products
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What triggers the release of secretin?
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H+ and fatty acids
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What triggers the release of GIP?
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lipids, protein products, and carbohydrates
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Increased H+ concentration inhibits the release of _______
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Gastrin
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_________ has a cyclical release every 90 min
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motilin
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a mixed meal will inhibit the release of which GI hormone?
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motilin
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chief, parietal and ECL cells are found in the _________ portion of the stomach
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parietal
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G cells are found in the ______ portion of the stomach
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antral
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Chief cells release __________
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pepsinogen
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parietal cells release __________ and ________
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intrinsic factor; H+
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G cells release ________
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gastrin
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_________ is called "nature's antacid"
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secretin
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secretin has inhibitory effects on _________ and ___________ cells. It also stimulates the release of ______
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parietal; G; HCO3-
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CCK potentiates ________ and inhibits ____________________
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secretin; gastric acid/emptying
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somatostatin release is stimulated by _________ and ___________
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gastrin; H+
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What is the main effect of GIP?
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release of insulin
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What are the neurocrines?
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VIP, GRP, enkephalins, neurotensin
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what are the paracrines?
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secretin and histamine
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what is the role of pancreatic polypetide?
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inhibits release of bicarb and pancreatic enzymes
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