Extracellular Fluids Have Relatively

Question

Extracellular fluids have relatively
A) high sodium and low potassium levels.
B) high sodium and high potassium levels.
C) low sodium and low potassium levels.
D) low sodium and high potassium levels.
E) higher concentrations of potassium,magnesium,phosphate,and sulfate ions.

Accepted Answer

Extracellular fluids, such as blood plasma and interstitial fluid, have a higher concentration of sodium ions and a lower concentration of potassium ions compared to intracellular fluid. This is because sodium ions are actively transported out of cells, while potassium ions are actively transported into cells. Therefore, extracellular fluids have relatively high sodium and low potassium levels.