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Q.
Brush border is characteristic of
Excretory Products and their Elimination
Solution:
The cells lining the proximal convoluted tubule are well adapted for reabsorption of materials from the filtrate. They have abundant mitochondria and bear numerous microvilli on the free side, thus, giving brush border appearance. Mitochondria power the active transport of nutrient molecules back into the blood. The cells reabsorb entire glucose, amino acids, most of the inorganic ions $\left( Na ^{+}, K ^{+}, Cl ^{-}\right)$, much of the water as well as some urea from the filtrate.