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23 Cards in this Set
- Front
- Back
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What cells in the stomach secrete HCl & intrinsic factor?
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Oxyntic/parietal cells in the gastric pits secrete HCl & intrinsic factor (uptake cofactor for B12)
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Which cells in the stomach produce pepsinogen?
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Chief cells (basophilic, found in gastric pits)
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What type of cells are paneth cells?
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Fixed macrophages (very eosinophilic secretory granules)
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Where are paneth cells located?
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Paneth cells are found in the crypts of lieberkuhn within the small intestine
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What is the identifying feature of the duodenum?
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Brunner's glands
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What is the function of Brunner's glands?
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Raises the pH of partially digested food by releasing bicarbonate
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What are the larger folds in the small intestine called?
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Plicae circulares (valves of Kerckring)
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What are the smaller folds on the plicae circulares called?
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Villi
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Where can you locate a brushborder in the digestive tract?
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In the small intestine lining the villi that are found on the plicae circulares
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How do you distinguish a section of jejunum from the rest of the small intestine?
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Plicae circulares w/NO peyer's patches or Brunner's glands
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What is the identifying feature of the Illeum?
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Peyer's Patches
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What is an example of an enteroendocrine cell of the stomach?
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G cells which secrete gastrin
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What makes the colon "bunch up?"
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Taenia Coli
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What is an identifying feature of the appendix?
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Lymph nodules all around the lumen & NO taenia coli
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What is an example of an enteroendocrine cell of the intestines?
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APUD (Amine Precursor Uptake Deamination)
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What are the 4 specialized cells of the stomach?
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1. G-cells
2. Mucous neck cells 3. Chief cells 4. Parietal/Oxyntic cells |
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What type of bacteria thrives in the stomach, which may cause gastric ulceration?
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Helicobacter Pylori
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How is G-cell function stimulated?
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1. Distension of the stomach
2. Nervous input (via postganglionic Vagus fibers during parasympathetic stimulation) |
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Which cells of the small intestine have phagocytic abilities?
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paneth cells
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What type of drug is Cimetidine (Tagament)?
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H2 receptor antagonist
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What type of drug is Acetazolamide?
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Carbonic anhydrase inhibitor
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What type of drug is Omeprazole (Prilosec)?
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Potassium hydrogen pump inhibitor
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What type of drug is Rantidine (Zantac)?
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H2 Receptor antagonist
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