The substance which is completely reabsorbed from the filtrate in the renal tubule under normal conditions is
A
Urea
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B
Salt
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C
Glucose
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D
Water
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Solution
The correct option is B Glucose The proximal convoluted tubule is the major site for tubular reabsorption of water (obligatory water resorption), nutrients, electrolytes, small proteins e.g. albumin etc. Glucose, amino acids, inorganic phosphate, and some other solutes are resorbed via secondary active transport through co-transporters driven by the sodium gradient out of the nephron.