Solved UPSC CDS/OTA Question
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Q · Excretory Systemmedium · 45s
The countercurrent multiplier mechanism is established by:
TopicExcretory System
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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The countercurrent multiplier involves the Loop of Henle’s hairpin structure where differing permeabilities of ascending and descending limbs, coupled with the countercurrent flow of blood in vasa recta, concentrate solutes in the medullary interstitium to facilitate water reabsorption.
Final Answer: Option B - Loop of Henle and vasa recta