Answer:
The correct option is B. Chloride is the major anion in the extracellular fluid.
Explanation:
Extracellular fluid is that fluid that is outside the cells. In the electrolyte composition of the extracellular fluid, we find the cations: Sodium, Potassium and Calcium whose charge is positive and the anions: Chloride, Bicarbonate and Phosphate, whose charge is negative. The most important and abundant extracellular anion is Chloride, which is practically absent inside the cells, due to its negative charge, acts alongside the sodium, maintaining the osmotic pressure of the blood. It also helps to maintain the acid-base balance of the body and it's essential for the production of hydrochloric acid in the stomach.
