The countercurrent multiplier system of the kidney

Question

Quizplus · Accepted Answer

All of the choices describe key features of the countercurrent multiplier system of the kidney. A) This system allows the kidneys to form hypertonic (concentrated) urine, which is essential for regulating the body's water balance. B) The proximity of the collecting ducts to the loops of Henle is important for the efficient movement of solutes and water between these structures. C) Active transport of sodium and chloride out of the ascending limb of the loop of Henle is a key process in generating the concentration gradient needed for the system to work. D) If the ascending limb of the loop of Henle were freely permeable to water, the concentration gradient would not be maintained and the system would not function properly. Therefore, choice E is the best answer as it summarizes all the correct statements.

The Countercurrent Multiplier System of the Kidney