| 11. | Another question is whether it can be counted as a nephron when there is no loop of Henle ( AFAIK ).
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| 12. | The primary role of the loop of Henle is to concentrate the salt in the interstitium, the tissue surrounding the loop.
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| 13. | In contrast, the medulla is structured into medullary cones that contain nephron elements, specifically collecting ducts and loops of Henle.
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| 14. | However, they surround the loop of Henle, forming the vasa recta, only in juxtamedullary nephrons and not in cortical nephrons.
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| 15. | Overall the loop of Henle reabsorbs around 25 % of filtered ions and 20 % of the filtered water in a normal kidney.
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| 16. | It contains the renal corpuscles and the renal tubules except for parts of the loop of Henle which descend into the renal medulla.
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| 17. | "' Bartter syndrome "'is a rare inherited defect in the thick ascending limb of the loop of Henle.
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| 18. | Since the descending limb of the loop of henle consists of very leaky epithelium, the fluid inside the descending limb becomes hyperosmolar.
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| 19. | The second segment of the tubules is the loop of Henle where the reabsorption of water and ions from the urine takes place.
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| 20. | The hypertonicity of the medulla ( and therefore concentration of urine ) is determined in part by the size of the loop of Henle.
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