2
INI CET 2021 November
Question
Juxtamedullary nephrons:
OPTION 4
֍ Juxtamedullary nephrons comprise 14-15% nephrons in the kidney.
֍ They have large sized glomeruli which are situated at the junction of the cortex and medulla of the kidney.
֍ The rate of filtration is high.
֍ They have long loops of Henle which penetrate into the medulla.
֍ Their Henle loops manifest vascular supply in the form of vasa recta.
֍ Both descending and ascending limbs of loop of Henle contain thin segments. (In cortical nephrons, descending limb contains a thin segment whereas the ascending limb contains a thick segment.)
Ref: Textbook of Physiology, A K Jain, 3rd edition, Volume 2, page 520.