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Q: Why does the Proximal convoluted tubule contains brush borders in their apical surface?
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Why proximal convoluted tubule is twisted?

to increase the surface area for reabsorbtion


Why is the proximal convoluted tubule twisted?

to increase the surface area for reabsorbtion


What is the purpose of the microvilli in the proximal convoluted tubule?

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I'm assuming that the filtrate refered to is that of Bowman's capsule in the kidney. If so then ... The cuboidal cells of the proximal convoluted tubule have long microvilli (brush border) on their apical (inside) surface that dramatically increase the surface area for reabsorption from the filtrate.


What muscle originates on the anterior surface of the scapula and inserts on the proximal anterior humerus?

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