Question

Which is true about the difference between cortical and juxtamedullary nephrons?

• A. Most nephrons are juxtamedullary
• B. The efferent arterioles of cortical nephrons give rise to most of the vasa recta
• C. The afferent arterioles of the juxtamedullary nephrons give rise to most of the vasa recta
• D. Juxtamedullary nephrons generate a hyperosmotic medullary interstitium

Answer 1

Answer: (D)

Cortical nephrons either have short or do not have loops of Henle. Only juxtamedullary nephrons have long loops of Henle, which plunge into the renal medulla and create a hypersomotic interstitium via counter current multiplication