Which of the Following Contributes the Vast Majority of the Extracellular

Question

Which of the following contributes the vast majority of the extracellular fluid's osmotic activity A)plasma proteins B)Na⁺ and its attendant anions C)K⁺ and its attendant anions D)Ca²⁺ and its attendant anions

Accepted Answer

Sodium ions (Na⁺) and their attendant anions (such as Cl⁻) are the primary contributors to the osmotic activity of the extracellular fluid. This is because they are present in the highest concentrations in the extracellular space compared to the other ions listed.