Question

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

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

Answer 1

The correct option is D Juxtamedullary nephrons generate a hyperosmotic medullary interstitium.

Cortical nephrons either have short or absent 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.

So the correct option is D.