True about nephron is_____________?
Correct answer: D. 60 to 70% of GFR is absorbed in proximal tubule
- A. Na is absorbed actively in descending loop of Henle
- B. The filtrate reaching distal convoluted tubule is hypertonic with respect to surroundings
- C. Absorption of water occurs in ascending loop of Henle
- D. 60 to 70% of GFR is absorbed in proximal tubule
Explanation
The proximal tubule normally reabsorbs about 60 to 70% of the filtered sodium and water, and thus of the GFR. The descending limb is mainly permeable to water, while the ascending limb is impermeable to water and the fluid reaching the DCT is dilute.
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