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Per NCERT, in a HEALTHY ADULT, what is the daily volume of initial filtrate produced by the kidneys — and how much is actually excreted as urine?
A100 mL filtrate; 100 mL excreted
B~2 L initial filtrate; 2 L excreted
C~180 L initial filtrate; only ~1–2 L excreted as urine (rest reabsorbed)
DNo filtrate at all
Answer & Solution
Correct answer: C. ~180 L initial filtrate; only ~1–2 L excreted as urine (rest reabsorbed)
Per NCERT §5.5.1 + Artificial kidney box, 180 L filtered daily; ~99% reabsorbed; 1–2 L excreted.
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