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Assertion :- The descending limb of loop...

Assertion `:-` The descending limb of loop of Henle is permeable to water but almost impermeable to electrolytes.
Reason `:-` Henle's loop plays a significant role in the maintenance of high osmolarity of medullary interstitial fluid.

A

If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion .

B

If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion

C

If Assertion is True but the Reason is False.

D

If both Assertion & Reason are false.

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Which of the following statements about the functioning of the kidney is CORRECT ? I. On a average , 1100-1200 ml of blood is filtered by the kidneys per minute which constitute roughly 1/5th of the blood pumped out by both the Ventricles of the heart in a minute . II. JGA is a special sensitive region formed by cellular modifications in the distal convoluted tubule and glomerulus at the location of their contact . III. The ascending limb of Henle's loop is impermeable to water but allows transport of electrolytes. IV. The collecting duct allows passage of small amounts of urea into the medullary interstitium to keep up the osmolality.

Read the given statements and identify the structure referred here. (i). Reabsorption in this region is minimum. (ii). This region plays a significant role in the maintenance of high osmalarity of interstitial fluid. (iii). Its descending limb is permeable to water but almost impermeable to electrolytes. (iv). Its ascending limb is impermeable to water but allows transport of electrolytes actively ro passively.

ALLEN-HUMAN PHYSIOLOGY -I-EXERCISE-IV(Assertion & Reason)
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