The Loop of Henle Functions as a Countercurrent Multiplier Mechanism

question 11

Multiple Choice

The loop of Henle functions as a countercurrent multiplier mechanism.In this context, "countercurrent" refers to the flow of filtrate in opposite directions in the descending and ascending limbs of the Loop of Henle, and "multiplier" refers to the

• A) different permeabilities of the descending and ascending limbs.
• B) amount of water conserved as a multiple of the length of the loop.
• C) creation of a solute concentration gradient in the interstitial fluids of the medulla.
• D) increasing concentration of filtrate as it flows through the loop.
• E) process by which active transport in the descending and ascending limbs multiplies the concentration gradient within the filtrate.

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