The glomerular filtration rate of the human kidney may be determined by measuring the plasma clearance of______________?
Correct answer: C. Inulin
- A. PAH
- B. Urea
- C. Inulin
- D. Glucose
Explanation
Inulin is freely filtered and neither reabsorbed nor secreted, so the amount cleared from plasma equals the GFR. PAH clearance estimates effective renal plasma flow, while urea is partly reabsorbed.
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