Question
Given below are two statements:
Statement I: In the nephron, the descending limb of loop of Henle is impermeable to water and permeable to electrolytes.
Statement II : The proximal convoluted tubule is lined by simple columnar brush border epithelium and increases the surface area for reabsorption.
In the light of the above statements, choose the correct answer from the option
given below:
Options
Solution
Sol. [Key Concept: Nephron permeability and epithelium]
Statement I is false: the descending limb of the loop of Henle is permeable to water and relatively impermeable to electrolytes. Statement II is false: the proximal convoluted tubule has simple cuboidal brush border epithelium; its microvilli increase the surface area for reabsorption. Hence, option (4).
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