The absorptive cells of the villi are covered by
a. hairlike projections called microvilli.
b. hormones that control digestive processes.
c. enzymes that speed absorption of nu-trients.
d. layers of circular and longitudinal muscle.
A
The villi are covered with microvilli that enhance absorption. Hormones are not found inside the digestive tract. Enzymes cause digestion of food, not absorption. The layers of circular and lon-gitudinal muscle are around the outside of the gastrointestinal tract, not on the inside lining.
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True False