Question:
Proximal convoluted tubule differs from distal convoluted tubule being lined by _________
Proximal convoluted tubule differs from distal convoluted tubule being lined by _________
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{PCT = brush border (many microvilli) for reabsorption}.
Updated On: Mar 6, 2026
- squamous cells with few microvilli
- squamous cells with many microvilli
- cuboidal cells with few microvilli
- cuboidal cells with many microvilli
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The Correct Option is D
Solution and Explanation
Step 1: Understanding structure of nephron.
The proximal convoluted tubule (PCT) is specialized for maximum reabsorption of useful substances from the filtrate.
Step 2: Cellular lining of PCT.
PCT is lined by cuboidal epithelial cells with numerous microvilli forming a brush border, which increases surface area for reabsorption.
In contrast, the distal convoluted tubule (DCT) has cuboidal cells with fewer microvilli.
Step 3: Conclusion.
Therefore, PCT differs from DCT by being lined with cuboidal cells having many microvilli.
The proximal convoluted tubule (PCT) is specialized for maximum reabsorption of useful substances from the filtrate.
Step 2: Cellular lining of PCT.
PCT is lined by cuboidal epithelial cells with numerous microvilli forming a brush border, which increases surface area for reabsorption.
In contrast, the distal convoluted tubule (DCT) has cuboidal cells with fewer microvilli.
Step 3: Conclusion.
Therefore, PCT differs from DCT by being lined with cuboidal cells having many microvilli.
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