Question

Brush border surface can be taken as a characteristic feature of _______ and this part has a massive amount of _____.

• A. Proximal convoluted tubule and mitochondria
• B. Distal convoluted tubule and thiazide
• C. Henle's loop and mitochondria
• D. Bowman's capsule and podocytes

Answer 1

The correct option is A

Proximal convoluted tubule and mitochondria

The first part of the tubule, just after the Bowman's capsule, is the proximal convoluted tubule. Brush border cells with multiple microvilli and a massive amount of mitochondria line this tube. This portion of the tubule is one of the largest contributors to electrolyte and water reabsorption. Around 65% of the sodium and water and a little less chloride that were filtered out of the plasma is reabsorbed into the vasa recta in this section.