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Question

Sodium, water and phosphate reabsorption is maximum in

A
Loop of Henle
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B
Proximal tubule
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C
Distal tubule
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D
Collecting tubule
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Solution

The correct option is C Proximal tubule
The proximal convoluted tubule is the major site for tubular reabsorption for almost 80% of the filtrate volume. This is the site for the reabsorption of water, nutrients, electrolytes, small proteins e.g. albumin, etc. The actions of PCT are regulated locally by autoregulatory mechanisms.
Thus, the correct answer is option B.

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