Published by:
CGP EDU Academic Team
Published on: August 21, 2026
The increase in osmolarity from outer to inner medullary interstitium is maintained due to:
A
Close proximity between Henle's loop and vasa recta
and , and
and , and
B
Counter current mechanism
and
and
C
Selective secretion of 
and hydrogen ions in PCT
and hydrogen ions in PCT D
Higher blood pressure in glomerular capillaries Only
Text Solution
Verified by ExpertsThe correct answer is:
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 
in the cortex to about 
in the inner medulla. This gradient is mainly caused by NaCl and urea.
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