Question

Juxta-medullary nephrons constitute what percentage of the total nephrons?

(a) 80%

(b) 50%

(c) 15-20%

(d) 75-95%

I had been asked this question in an interview.

This is a very interesting question from Human Excretory System in section Excretory Products and Elimination of Biology – Class 11

Answer 1

Correct option is (c) 15-20%

Easy explanation: Juxta-medullary nephrons constitute about 15-20% of the total nephrons. These nephrons have long Henle’s loop. Vasa recta are present. These nephrons work in stressful conditions.