Which of the following structures supplies blood to the medulla?
A) Renal arteries
B) Arcuate arteries
C) Peritubular capillaries
D) Vasa recta

Question

Quizplus · Accepted Answer

Vasa recta is the correct answer because it is a specialized network of capillaries in the renal medulla that supply blood to the nephrons and maintain the concentration gradient necessary for urine concentration. The other choices, such as the renal arteries, arcuate arteries, and peritubular capillaries, supply blood to other areas of the kidney but not specifically to the medulla.

Which of the Following Structures Supplies Blood to the Medulla