1) Which of the following cells in a healthy adult human show the highest turnover? A. Neurons of the hippocampus B. Epithelial cells of the urinary tract C. Hepatocytes of the liver D. Epithelial cells of the small intestine E. Neutrophils of the blood 2. Indicate true (T) and false (F) statements below regarding the pattern of cell proliferation in the epithelium that forms the lining of the small intestine. Your answer would be a four-letter string composed of letters T and F only, e.g. TTTT. - New epithelial cells are constantly born throughout the epithelial sheet, mostly at the villi. ( ) - Every type of intestinal epithelial cell is eventually discarded into the gut lumen where they die. ( ) - There is a net movement of cells from the bottom of the crypts up toward the tip of the villi. ( ) -The majority of intestinal epithelial cells have packed microvilli on their apical surfaces. ( )
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Adi S.
43. The epithelium that lines the urinary bladder is a. transitional epithelial tissue b. stratified squamous epithelium c. pseudostratified columnar d. simple cuboidal epithelium 44. Which of the following statements about CONNECTIVE TISSUE is FALSE?? a. CT is usually highly vascularized except for cartilage. b. CT cells are densely packed with no intercellular matrix. c. CT cells are scattered within a protein matrix. d. CT includes bones and blood. 45. What type of cell creates the "waves of contraction" [peristalsis] that empty the urinary bladder? a. transitional epithelium b. adipose connective c. smooth muscle d. neuroglial cells
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Which of the following statements about the small intestine is false? a. Absorptive cells that line the small intestine have microvilli, small projections that increase surface area and aid in the absorption of food. b. The inside of the small intestine has many folds, called villi. c. Microvilli are lined with blood vessels as well as lymphatic vessels. d. The inside of the small intestine is called the lumen.
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