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* The aims of the loop of henle is to reduce the volume of water and solutes within the urine but without changing the concentration.  In doing this it creates a hypertonic medulla
 
* The aims of the loop of henle is to reduce the volume of water and solutes within the urine but without changing the concentration.  In doing this it creates a hypertonic medulla
 
* It does this by using a '''countercurrent multiplier'''
 
* It does this by using a '''countercurrent multiplier'''
* This is maintained by the [[Vasa Recta - Anatomy & Physiology | Vasa recta]]
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* This is maintained by the vasa recta
    
* This hypertonic medulla not only helps reabsorb water from the loop of henle but also aids the reabsorption of water from the collecting ducts as well as they pass through the medulla en-route to the renal pelvis
 
* This hypertonic medulla not only helps reabsorb water from the loop of henle but also aids the reabsorption of water from the collecting ducts as well as they pass through the medulla en-route to the renal pelvis
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