Match the terms in column B with their descriptions in column A., _____1. Most abundant anion; necessary in gastric juice , _____2. Component of chlorophyll; plays assisting role in metabolic functions , _____3. Component of bones and teeth; essential for muscle contraction , _____4. Controls and regulates bodily fluid particularly the osmotic balance in the kidneys , _____5. Controls and regulates bodily fluids , A. Ca , B. Cl , C. K , D. Na , E. Mg