Electrolyte Composition of the Fluid

Electrically charged particles act as a conductor of electrical current in the solution. E.g. NaCl > Na+ + Cl-

Intracellular fluid and extra cellular fluid are separated by cell membrane, which is semi permeable. Body fluid composed of water, electrolyte, and non-electrolyte. The difference is maintained by the cells, which actively reject certain electrolytes, and retain others. E.g. Na+ is reach higher in concentration in extra cellular fluid. The difference is maintained by cellular action referred as sodium pump, which reject sodium from the cells. The major ions of cellular fluid in order of their quantity are:

ICF   ECF
K+ 141 M Eg/L 4 M. Eg/L
Mg++ 58 M Eg/L 2 M. Eg/L
Po4++ 75 M Eg/L 10 M. Eg/L
Na+ 10 M Eg/L 142 M. Eg/L
Cl+ 4 M Eg/L 103 M. Eg/L