Which of the following parts of a kidney contains the lowest concentration of urea?
Branches of the renal vein
The correct option is D.
Explanation for Correct option:
It carries blood that has the lowest concentration of urea and ions of minerals and takes these away from the kidney.
Explanation for Incorrect option:
Option A:
It helps in the filtration of blood.
Option B:
The principal purpose of the Henle loops and the ascending limb of the distal tubule is to concentrate urine by a concept known as 'countercurrent multiplication.'
Option C:
Bowman's capsule is a structure that surrounds the glomerulus loops and aids in the filtering of blood from the capillaries.
Final answer: Branches of the renal vein contain the lowest concentration of urea.