Because of countercurrent multiplication, the loop of Henle is able to establish a vertical osmotic gradient in the renal medulla up to 1,200 mOsm/liter, despite the fact that the active salt pump of the ascending limb is only able to produce a 200 mOsm/liter osmotic gradient at each horizontal level.

Question

Quizplus · Accepted Answer

Countercurrent multiplication allows for the establishment of a vertical osmotic gradient in the renal medulla up to 1,200 mOsm/liter, despite the fact that the active salt pump of the ascending limb is only able to produce a 200 mOsm/liter osmotic gradient at each horizontal level. This is due to the countercurrent flow of fluid in the loop of Henle, which allows for the concentration of solutes and establishment of a strong osmotic gradient.

Because of Countercurrent Multiplication, the Loop of Henle Is Able