Which of the Following Fluids Has the Greatest Concentration of Potassium

Question

Which of the following fluids has the greatest concentration of potassium ions?
A)extracellular fluid (ECF)
B)plasma
C)interstitial fluid
D)cytosol

Accepted Answer

Potassium ions have a high concentration inside the cell, so the cytosol, or intracellular fluid, has the greatest concentration of potassium ions compared to extracellular fluids like ECF, plasma, and interstitial fluid.