Statement I: In the nephron, the descending limb of loop of Henle is impermeable to water and permeable to electrolytes.

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Q.
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 options given below: [2024]

1 Both Statement I and Statement II are true.

2 Both Statement I and Statement II are false.

3 Statement I is true but Statement II is false.

4 Statement I is false but Statement II is true.

Ans.
(2)

In the nephron, descending limb of loop of Henle is permeable to water but almost impermeable to electrolytes. Proximal Convoluted Tubule (PCT) is lined by simple cuboidal brush border epithelium which increases the surface area for reabsorption.

Solution

1 Both Statement I and Statement II are true.

2 Both Statement I and Statement II are false.

3 Statement I is true but Statement II is false.

4 Statement I is false but Statement II is true.

Ans.
(2)

In the nephron, descending limb of loop of Henle is permeable to water but almost impermeable to electrolytes. Proximal Convoluted Tubule (PCT) is lined by simple cuboidal brush border epithelium which increases the surface area for reabsorption.

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Solution

1 Both Statement I and Statement II are true.

2 Both Statement I and Statement II are false.

3 Statement I is true but Statement II is false.

4 Statement I is false but Statement II is true.

Ans. (2) In the nephron, descending limb of loop of Henle is permeable to water but almost impermeable to electrolytes. Proximal Convoluted Tubule (PCT) is lined by simple cuboidal brush border epithelium which increases the surface area for reabsorption.

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Ans.
(2)

In the nephron, descending limb of loop of Henle is permeable to water but almost impermeable to electrolytes. Proximal Convoluted Tubule (PCT) is lined by simple cuboidal brush border epithelium which increases the surface area for reabsorption.