Question

A type of nephron that makes up 15% of nephrons located close to the cortico-medullary junction, that plays an extensive role in the concentration of urine and medullary osmotic gradient?

a) Cortical nephron
b) Juxtamedullary nephron
c) Glomerular nephron
d) Medullary nephron

Answer 1

Juxtamedullary nephrons, located close to the cortico-medullary junction, play an extensive role in the concentration of urine and the medullary osmotic gradient. They have a longer loop of Henle compared to cortical nephrons, which allows them to regulate urine concentration better.

Step-by-step explanation:

Juxtamedullary nephrons are a type of nephron that make up 15% of the nephrons and are located close to the cortico-medullary junction. These nephrons play an extensive role in the concentration of urine and the medullary osmotic gradient. They have a longer loop of Henle compared to cortical nephrons, which allows them to regulate urine concentration better.