_______ Ions are the Most Abundant Extracellular Anions

Question

_______ ions are the most abundant extracellular anions.
A) Calcium
B) Sodium
C) Chloride
D) Magnesium

Accepted Answer

Chloride ions are the most abundant extracellular anions, with an average concentration of 100 mM in the plasma of humans. Sodium ions are the most abundant extracellular cations, while calcium and magnesium ions are found in lower concentrations.