Which of the following statements is correct?

  • Option 1)

    The ascending limb of loop of Henle is impermeable to water

  • Option 2)

    The descending limb of loop of Henle is impermeable to water

  • Option 3)

    The ascending limb of loop of Henle is permeable to water

  • Option 4)

    The descending limb of loop of Henle is permeable to electrolytes

 

Answers (1)
V Vakul

 

MECHANISM OF CONCENTRATION OF THE FILTRATE -

The flow of blood through the two limbs of vasa recta is also in a counter current pattern. The proximity between the Henle’s loop and vasa recta, as well as the counter current in them help in maintaining an increasing osmolarity towards the inner medullary interstitium, i.e., from 300 mOsmol L–1 in the cortex to about 1200 mOsmol L–1 in the inner medulla.

- wherein

MECHANISM OF CONCENTRATION OF THE FILTRATE

 

 Only salt goes outside in ascending loop, not water.


Option 1)

The ascending limb of loop of Henle is impermeable to water

This solution is correct 

Option 2)

The descending limb of loop of Henle is impermeable to water

This solution is incorrect 

Option 3)

The ascending limb of loop of Henle is permeable to water

This solution is incorrect 

Option 4)

The descending limb of loop of Henle is permeable to electrolytes

This solution is incorrect 

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