Concentration of sodium and chloride ions is lowest

Near the cortex

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Deep in medulla

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In interstitial fluid

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In middle of Henle's loop

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Solution

The correct option is A Near the cortex
Osmolarity in the cortex region of the kidney is the lowest. Hence, the concentration of sodium and chloride ions is the lowest in the region near cortex.
So, the correct option is 'Near the cortex'.

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The medullary ascending limb of nephron remains permeable to Sodium,pottasium(K⁺) and chloride(Cl⁻) ions by a specific transport process. What is it?

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