Extracellular fluids have relatively
A)high sodium and low potassium ion concentrations.
B)high sodium and high potassium ion concentrations.
C)low sodium and low potassium ion concentrations.
D)low sodium and high potassium ion concentrations.

Question

Extracellular fluids have relatively
A)high sodium and low potassium ion concentrations.
B)high sodium and high potassium ion concentrations.
C)low sodium and low potassium ion concentrations.
D)low sodium and high potassium ion concentrations.

Quizplus · Accepted Answer

Extracellular fluids have high sodium and low potassium ion concentrations, while intracellular fluids have high potassium and low sodium ion concentrations. This is due to the sodium-potassium pump, which actively transports sodium out of the cell and potassium into the cell, maintaining the concentration gradients. Therefore, the best choice is A, which describes the high sodium and low potassium ion concentrations in extracellular fluids.

Extracellular Fluids Have Relatively