Renal System MCAT Practice Question
A 35-year-old man with a history of type 2 diabetes mellitus presents with persistent proteinuria on routine urinalysis. His serum creatinine is 1.2 mg/dL and his glomerular filtration rate is estimated at 65 mL/min/1.73mĀ². His nephrologist orders a renal biopsy and simultaneously measures Starling forces across the glomerular capillary membrane to assess the mechanism of proteinuria. The measurements are as follows: - Glomerular capillary hydrostatic pressure: 45 mmHg
- Bowman's space hydrostatic pressure: 10 mmHg
- Glomerular capillary colloid osmotic pressure: 25 mmHg
- Bowman's space colloid osmotic pressure: 5 mmHg Which of the following best represents the net filtration pressure across the glomerular capillary wall?
Answer choices
- A5 mmHg
- B10 mmHg
- C15 mmHgCorrect answer
- D25 mmHg
- E30 mmHg
- F35 mmHg
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