What creates the osmotic gradient in the renal medulla?
A)passive transport of solute out of the distal tubules and collecting ducts
B)special transport systems of the loops of Henle of cortical nephrons
C)active transport of solute out of the proximal tubule
D)active transport of solute out of the distal tubules and collecting ducts
E)special transport systems of the loops of Henle of juxtamedullary nephrons

Question

Quizplus · Accepted Answer

The osmotic gradient in the renal medulla is primarily created by the countercurrent multiplier system in the loops of Henle of juxtamedullary nephrons, which have special transport systems that actively transport solutes to establish the gradient.

What Creates the Osmotic Gradient in the Renal Medulla