What happens to some solutes and nutrients in the proximal tubule?
Understand the Problem
The question is asking about the processes that occur in the proximal tubule of the nephron, specifically regarding solutes and nutrients. It prompts a discussion on the reabsorption and secretion mechanisms that take place in this part of the kidney.
Answer
Reabsorption of glucose, amino acids, phosphate, citrate, and 70% of sodium occurs in the proximal tubule.
In the proximal tubule, solutes and nutrients such as glucose, amino acids, phosphate, and citrate are reabsorbed. About 70% of sodium reabsorption also occurs here.
Answer for screen readers
In the proximal tubule, solutes and nutrients such as glucose, amino acids, phosphate, and citrate are reabsorbed. About 70% of sodium reabsorption also occurs here.
More Information
The proximal tubule is crucial for reclaiming essential nutrients and solutes from the filtrate back into the bloodstream, preventing their loss in urine.
Tips
A common mistake is to overlook the role of the proximal tubule in secreting waste products and drugs; it's not just about reabsorption.
Sources
- PMC Article - pmc.ncbi.nlm.nih.gov
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