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What makes the fluid in the ascending limb of the nephron loop hypotonic?

Where does glucose reabsorption occur in the nephron?

What percentage of filtered urea is excreted in urine?

What characteristic of peritubular capillaries favors reabsorption?

What effect does high pressure in the glomerular capsule have on filtration?

What is the ureterorenal reflex?

How does ADH affect urine concentration?

What is the outer, fibrous capsule that encloses the kidney called?

Where does blood enter the kidney?

Which of the following is NOT a common constituent of urine?