Fill in the blanks with the correct option. (I)(II)(III)(a)SameAscendingThin(b)OppositeDescendingThick(c)SameDescendingThick(d)OppositeAscendingThin

Fill in the blanks with the correct option. (I)(II)(III)(a…

Biology NEET Full Syllabus Mock Test 180 Questions New Syllabus Mock Test - 11 PCB Single Correct MCQ

Published on: August 21, 2026

Fill in the blanks with the correct option.

The flow of filtrate in the two limbs of Henle's loop is in I direction and thus form a counter current.

NaCl is transported by the II limb of Henle's loop which is exchanged with the descending limb of vasa recta.

Small amounts of urea enter the III segment of the ascending limb of Henle's loop.

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The correct answer is:

• Flow of filtrate in the two limbs of Henle's loop is in opposite directions → forms a counter current.

• Ascending limb of loop of Henle transports NaCl out (impermeable to water); this is exchanged with the descending limb of vasa recta.

• Small amounts of urea enter the thin segment of the ascending limb by diffusion.

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