The proximal convoluted tubule has a brush border, which is due to
A
Microvilli
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B
Minute hairs
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C
Endothelium
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D
Folded tubes
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Solution
The correct option is C Microvilli The most distinctive characteristic of the proximal tubule is its brush border. The luminal surface of the epithelial cells of this segment of the nephron is covered with densely packed microvilli, giving the brush border like surface. The microvilli greatly increase the luminal surface area of the cells.