Brush border of small intestine cells are made up of
A
Microvilli
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B
Cilia
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C
Rugae
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D
Circular folds
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Solution
The correct option is D Microvilli
The primary function of the small intestine is the absorption of nutrients and minerals in food. The inner wall of the small intestine is lined by simple columnar epithelial tissue. Each cell has finger-like projections called microvilli. The function of the microvilli is to increase the surface area for nutrient absorption. Thus the correct answer is option A.