BiologyAnatomy & Physiology

Juxtaglomerular Apparatus: Which Nephron Region Secretes Renin?

Select the juxtaglomerular apparatus and distinguish renin-secreting granular cells from the macula densa.

Question

Which nephron region helps control blood pressure by secreting renin?1. glomerulus2. proximal convoluted tubule3. juxtaglomerular apparatus4. loop of Henle5. collecting duct

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Evidence boundary

This addresses SIU’s renal self-assessment Question 64 with its five listed options. It asks for the regulatory region, not an individual cell. The explanation identifies granular cells as the renin source and does not substitute the different option set in Question 61 or infer patient measurements.