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Assertion : In the descending limb of lo...

Assertion : In the descending limb of loop of Henle , the urine is hypertonic , while in ascending limb of loop of Henle , the urine is Hypotonic .
Reason : Descending limb is impermeable to Na' while ascending limb is impermeable to `H_(2)O`

A

If both the assertion and the reason are true and the reason is a correct explanation of the assertion

B

If both the assertion and reason are true but the reason is not a correct explanation of the assertion

C

If the assertion is true but the reason is false

D

If both the assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
A
Descending limb is permeable to water and impermeable to ions as a result wear diffuses out into interstitium and thus contribute to hypertonic urine.
Ascending limb is impermeable to water but permeable to ions and make the filtrate hypotonic urine.
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