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3 How do cortical nephrons and juxtamedullary nephrons differ structurally?
Wiki User
∙ 13y ago
The cortical nephrons,from their name are almost entirely embedded within the cortex of the kidney.They have shortish loops of Henle that do not really extend far into the medulla.
By contrast, the juxtamedullary nephrons have longs loops of Henle that do extend far into the medulla.The glomeruli of the juxtamedullary nephrons are typically close to the medulla (which is how these got their name)
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoDifferences exist between the cortical nephrons that originate near the surface of the kidney and the juxtamedullary nephrons that begin near the border between the cortex and medulla of the kidney. The major anatomic difference is the length of the loops of Henle. The thin segment of the loop in cortical nephrons is short and the thick segment often begins before the bend in the loop. These loops do not extend into the medulla. In addition, the proximal convoluted tubules of cortical nephrons are shorter and the glomeruli are smaller than those of juxtamedullary nephrons. Such nephrons might appear in situ in a section of the kidney. The glomeruli and the proximal and distal convoluted tubules of all nephrons are confined to the cortex, whereas only the loops of Henle of the juxtamedullary nephrons and the collecting tubules enter the medulla.
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