digestive Flashcards
Which of the following statements concerning the mucosal glands of the pylorus is (are) false?
• Resemble those in the body of the stomach
• Contain abundant parietal cells in their basal portions
• Secrete more pepsinogen than do fundic glands
• Have shallower pits than those in the fundic region
• Secrete mainly mucus
all false but the fact that they mainly secrete mucus.
short, branched tubular and the basl portions a re often coiled
Which of the following statements concerning the wall of the stomach is (are) false?
• Simple squamous epithelium covers its outer surface
• Forms temporary folds called plicae circulares when the stomach is empty
• Stratified squamous epithelium covers its inner surface
• Three layers of skeletal muscle comprise its tunica muscularis externa
• Submucosa is a component of its wall
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Which of the following statements concerning lining epithelium of small intestine is (are) true?
• Epithelial cells are connected by prominent apical junctional complexes
• Epithelium rests on a discontinuous basal lamina
• Goblet cells are present
• Paneth cells are present
• Enteroendocrine cells are present
• Basal cells are present
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Which of the following statements concerning Brunner’s glands is (are) false?
• Are characteristics components of the jejunal wall
• Produce a serous secretion that is rich in digestive enzymes
• Lie in the submucosal layer
• Empty their secretions into the lymphatic capillaries
• Their secretory portions are composed of goblet cells
• Produce alkaline secretion
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Which of the following statements is (are) true of the absorptive cells of the small intestine?
• Are also called enteroendocrine cells
• Many microvilli cover their basal surfaces
• Contain basal labyrinth
• Many microvilli cover their apical surfaces
• Undergo mitosis at the tips of the villi and are sloughed into the crypts
absorptive cells are enterocytes
only correct answer is many apical microvilli
Contain eosinophilic granules in their apical portions • Parietal cells • Chief cells • Enteroendocrine cells • Paneth cells • Goblet cells • Enterocytes
full of lysosymes….. paneth
Chief cells in glandulae gastricae • Secretory – protein cells • Produce mucus • Produce steroids • Produce polypeptides
only secretory-protein cell. dont PRODUCE polypeptides
Which of the following is/are true of serous demilunes of salivary glands? • produce IgA • border directly on intercalated ducts • produce mucus • produce lysozyme • occur in parotid glands • produce amylase • occur in submandibular glands
produce lysosyme and amylase
occur in submandibular glands
Which of the following is/are typically found in the portal space? • interlobular bile duct • branch of the central vein • branch of the hepatic artery • hepatic acinus • lymphatic vessel
interlobular bile duct, branch of hepatic a, lymphatic v
Which of the following is/are true of the space of Disse?
• is bordered directly by hepatocytes
• contents flow toward the central vein
• surrounds hepatic sinusoid
• lumen is entirely sealed by desmosomes
• content empty into interlobular bile duct ?
• contains cells of Ito
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Which of the following is/are true of the cells lining striated ducts of the salivary glands?
• contain basal labyrinth
• are characterized by a paucity of mitochondria
• are characterized by basally located nuclei
• are characterized by abundant, long apical microvilli
• are surrounded by smooth muscle cells
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contain Kupffer cells
• hepatic sinusoids
• spaces of Disse
• intercellular bile canaliculi
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Which of the following organs characteristically contains the most goblet cells in the epithelium covering its villi?
a. anal canal
b. stomach
c. duodenum
d. ileum
e. jejunum
f. colon
g. cecum
ileum
