Glomerular Diseases USMLE Step 1 Practice Question
A 46-year-old man with type 2 diabetes and diabetic nephropathy presents with persistent albuminuria despite HbA1c of 6.8%. Vital signs: BP 148/92 mmHg, HR 88/min, RR 16/min, Temp 37°C, SpO2 98%. Urinalysis shows 2+ proteinuria; serum creatinine is 1.1 mg/dL. He denies edema. His physician initiates lisinopril to reduce intraglomerular pressure. This renoprotective effect is most directly mediated by dilation of which of the following vascular structures?
Answer choices
- AAfferent arteriole
- BInterlobular artery
- CVasa recta
- DDescending limb of Henle
- EEfferent arterioleCorrect answer
- FPeritubular capillaries
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