Proximal Tubule HCO₃^- Reabsorption is Inhibited by Which of the Following

Question

Proximal tubule HCO3^- reabsorption is inhibited by which of the following? A)Increased partial pressure of carbon dioxide (Pco2) B)Expansion of the extracellular fluid (ECF)volume C)Systemic acidosis D)Endothelin E)Hypokalemia

Accepted Answer

Expansion of the extracellular fluid (ECF) volume inhibits proximal tubule reabsorption. This is because the body perceives the increased ECF volume as an excess of fluid, leading to a decrease in reabsorption to eliminate the excess fluid and restore fluid balance.

Proximal tubule HCO3- reabsorption is inhibited by which of the following?

Proximal tubule HCO₃^- reabsorption is inhibited by which of the following?