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Chapter 15: Digestive Tract

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In which of the following structures of the oral cavity would taste buds be localized in the highest concentration?

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a. Fungiform papillae

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b. Gingiva

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c. Filiform papillae

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d. Ventral surface of the tongue

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e. Vallate papillae

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Certain antibiotic therapies slow the replacement of the cells lining the small intestine. This may cause the loss of what tissue type?

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a. Ciliated pseudostratified columnar epithelium

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b. Simple cuboidal epithelium

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c. Simple columnar epithelium

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d. Pseudostratified columnar epithelium with stereocilia

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e. Stratified squamous, nonkeratinized epithelium

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The teniae coli of the large intestine represent an organ-specific specialization of which layer of the intestinal tract wall?

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a. Epithelium

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b. Lamina propria

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c. Muscularis mucosa

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d. Muscularis externa

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e. Serosa

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Which of the following would most likely result from a reduction in the number of Paneth cells?

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a. Thinning of the glycocalyx

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b. Reduced breakdown of fats

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c. Elevated levels of undigested proteins

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d. Decreased mucus in the intestine

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e. Increased number of intestinal bacteria

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A medical student on a rotation in the pathology laboratory is given an unlabeled microscope slide with tissue provided by a gastroenterologist from a cancer patient she is attending. The mucosa and submucosa are poorly preserved, with only the thick muscularis well-stained, showing striated fibers. The slide most likely shows a biopsy of which region of the GI tract?

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a. Pyloric sphincter

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b. Esophagus

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c. Colon

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d. Corpus of the stomach

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e. Ileum

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Diarrhea may result if which of the following organs fails to carry out its role in absorbing water from the feces?

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a. Anal canal

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b. Cecum

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