The Loop of Henle establishes medullary hyperosmolarity Countercurrent exchange of solutes between ascending and descending vasa recta (the renal medullary capillaries) minimizes solute washout from the medullary interstitium.Click to see full answer. Simply so, what is the countercurrent exchange system?Countercurrent exchange is a mechanism occurring in nature and mimicked in industry and engineering, in which there is a crossover of some property, usually heat or some chemical, between two flowing bodies flowing in opposite directions to each other. where does countercurrent exchange occur in the nephron? The countercurrent exchange mechanism. Transport of NaCl (without water) in the thin and thick ascending limb of the loop of Henle results in an interstitial osmolal gradient from 285 mosmol/kg (in the cortex, similar to plasma) to >1200 mosmol/kg in the medulla at the tip of the renal papilla. Likewise, people ask, what is the countercurrent mechanism of the nephron loop? The counter current mechanism takes place in Juxtamedullary nephron. The function of the countercurrent multiplier is to produce the hyperosmotic Medullary Interstitium. The ADH promotes water reabsorption through the walls of the distal convoluted tubule and collecting duct.How is the loop of Henle a countercurrent multiplier?The descending limb of the loop of Henle is permeable to water but impermeable to solutes, due to the presence of aquaporin 1 in its tubular wall. The countercurrent flow within the descending and ascending limb thus increases, or multiplies the osmotic gradient between tubular fluid and interstitial space.