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Assertion A: The renal fluid becomes inc...

Assertion A: The renal fluid becomes increasingly concentrated when it flows down in the descending limb of loop of Henle towards the inner medulla but its concentration decreases in the ascending limb when it flows towards the cortex
Reason R: The descending limb of the loop of Henle reabsorbs water, the ascending limb is impermeable to water but salts are reabsorbed

A

Both A and R are true, R is correct explanation of A

B

Both A and R is true, R is not the correct explanation of A

C

A is true but R is false

D

A is false but R is true

Text Solution

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The correct Answer is:
A
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In descending limb of loop of Henle, filtrate becomes

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Assertion: In the descending limb of loop of Henle the urine is hypotoonic, while in ascending limb of loop of Henle, the urine is hypertonic. Reason: Descending limb is impermeable to water while ascending limb is impermeable to Na^(+)

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

Assertion :- When filtrate pass through descending limb of loop of Henle it becomes concentrate. Reason :- Descending limb allows transport of electrolytes actively or passively.

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