What is the principal negative ion (anion)in the extracellular fluid (ECF)that is present in high concentrations?
A)sodium
B)potassium
C)glucose
D)calcium
E)chloride

Question

What is the principal negative ion (anion)in the extracellular fluid (ECF)that is present in high concentrations?
A)​sodium
B)potassium
C)glucose
D)calcium
E)​chloride

Quizplus · Accepted Answer

Chloride (Cl-) is the principal negative ion in the ECF and is present in high concentrations, as it balances the positively charged sodium ions (Na+) present in the fluid. Sodium and potassium are positive ions, glucose is a neutral molecule, and calcium is a positive ion that is not present in high concentrations in the ECF.

What Is the Principal Negative Ion (Anion)in the Extracellular Fluid