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Question
Which of the following is not true of intestinal villi?
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Solution
They possess microvill:
Microvilli are protoplasmic projections of the columnar epithelium of the villi.
They increase the surface area:
The villi of the small intestine project into the intestinal cavity and along with the microvilli help in increasing the surface area for absorption of digested food.
They are supplied with capillaries and the lacteal vessels:
Each villus is lined with columnar epithelium and has a supply of lymph vessels (lacteal) and blood capillaries.
They only participate in digestion of fats:
Brush border cells that are associated with the epithelium of the small intestine produce enzymes (succus entericus). Intestinal lipase is one of the enzymes helping in fat digestion.
Final answer:
d. They only participate in digestion of fats
Microvilli are protoplasmic projections of the columnar epithelium of the villi.
They increase the surface area:
The villi of the small intestine project into the intestinal cavity and along with the microvilli help in increasing the surface area for absorption of digested food.
They are supplied with capillaries and the lacteal vessels:
Each villus is lined with columnar epithelium and has a supply of lymph vessels (lacteal) and blood capillaries.
They only participate in digestion of fats:
Brush border cells that are associated with the epithelium of the small intestine produce enzymes (succus entericus). Intestinal lipase is one of the enzymes helping in fat digestion.
Final answer:
d. They only participate in digestion of fats
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