Cells of the small intestine and kidney tubule have a "brush border" composed of ________, which are cell extensions that increase surface area.
A. plicae
B. flagella
C. cilia
D. rugae
E. microvilli
Answer: E
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Indicate whether this statement is true or false.
A claw-tooth hammer being used to pry up a nail is an example of which class of lever?
A. 1st class B. 2nd class C. 3rd class D. not a lever
A measure of the number of deaths attributed to a specific disease over a period of time is ________.
A. pandemic B. epidemic C. morbidity D. mortality
Calculate renal clearance of X given the following information: GFR = 100 mL/min, urine flow rate 118) = 5 mL/min, plasma concentration of X = 10 mg/mL, urine concentration of X = 50 mg/mL.
A) Y is freely filterable. B) Y is reabsorbed. C) Y is secreted. D) Y is neither reabsorbed nor secreted. E) Y is not freely filtered.