Gastrointestinal System Quiz

{How often are the cells of the gastric glands renewed? -1-2 -2-4 days +4-7 days -7-10
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{The intestinal villi increase in size and density from proximal to distal? -true +false
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{Pancreatic B-cells occupy what portion of the Islet of Langerhans? -the pancreatic head +the interior/center -randomly mixed -the exterior/periphery
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{Deoxygenated blood travels through the liver via what pathway? -portal vein --> sublobular vein --> portal sinusoids --> portal venules --> central vein --> hepatic veins --> IVC -central vein --> portal venules --> hepatic veins --> portal sinusoids --> sublobular vein --> portal vein --> IVC -portal vein --> portal venules --> sublobular vein --> IVC --> portal sinusoids --> hepatic veins --> central vein +portal vein --> portal venules --> portal sinusoids --> central vein --> sublobular vein --> hepatic veins --> IVC
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{List the histological layers of the gallbladder from superficial to deep: -simple cuboidal epithelium w/striated border/apical vesicles --> lamina p --> muscularis mucosa --> adventia/serosa +simple columnar epithelium w/ striated border/apical vesicles --> lamina propria --> muscularis --> adventia/serosa -simple columnar epithelium with submucosal glands throughout wall --> lamina p --> submucosa --> adventia/serosa -simple cuboidal epithelium w/ striated border --> lamina propria --> inner circ/outer long. smooth M --> adven/serosa
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{What is not charactistic of a hepatocyte? -up to 50 Golgi stacks -sER for detoxification of toxins/exogenous compounds +few mitochondria -ergastoplasm
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{Toxic damage to the liver occurs in the inner portion of the classic liver lobule? +false -true
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{Short-chain fatty acids, once in the enterocyte, are transported to the body by? -a central lateal -a chylomicron and exit via basolateral membrane -ceruloplasmin +nearby capillaries
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{What is NOT a product of the APUD cell of the gastric gland? +lipase -gastrin -serotonin -glucagon
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{What is NOT a function of saliva? -contains salivary amylase: digestion -contains protein that bind IgA and lysozyme: defense +has K+ to aid in contractility of oral musclature: swallowing -has water and proteins for lubrication
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{Which salivary gland structure has pump to retain Na+ and secrete K+ and HCO3? +striated ducts (of intralobular ducts) -serous demilunes -intercalated ducts -interlobular ducts
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{What collection of characteristics best match? -pancreatic acinus: has darkly-staining centroacinar cells, intercalated ducts and striated ducts -sublingual gland: has serous and mucous tubules with demilunes, but serous tubules predominate -submandibular gland: has serous tubules but is mostly made of mucous alveoli, long intercalated ducts +parotid gland: only has serous alveoli, as well as fat cells, long intercalated ducts, and large striated ducts
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{What IS correct about taste buds? -each filiform papilla has many taste buds associated with it +contain basal, supporting, and sensory cells -taste sensation to the anterior 2/3 of the tongue is done by CN IX -the base of each vallate papilla receives secretions from submucosal mucous gland
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