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Question
From which part of the renal tubule are 60-65% of water and virtually all nutrients, electrolytes, and plasma proteins reabsorbed into the blood?
From which part of the renal tubule are 60-65% of water and virtually all nutrients, electrolytes, and plasma proteins reabsorbed into the blood?
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Solution
The correct option is A proximal convoluted tubule
The first part of the tubule, just after the Bowman's capsule, is the proximal convoluted tubule. Brush border cells with multiple microvilli and a massive amount of mitochondria as you know, line this tube. The reason? This portion of the tubule is one of the largest contributors to electrolyte and water reabsorption. Around 65% of sodium and water and a little less chloride are filtered out of the plasma and are reabsorbed into the vasa recta in this section.
The first part of the tubule, just after the Bowman's capsule, is the proximal convoluted tubule. Brush border cells with multiple microvilli and a massive amount of mitochondria as you know, line this tube. The reason? This portion of the tubule is one of the largest contributors to electrolyte and water reabsorption. Around 65% of sodium and water and a little less chloride are filtered out of the plasma and are reabsorbed into the vasa recta in this section.
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