Intracellular Fluid (ICF)
- is 2/3 of TBW, 40% of body weight in man,
- water forms about 75 - 80%
- the major cations are K+ and Mg2+
- the major anions are protein and organic phosphates such as ATP, ADP and AMP;
- pH of ICF is 6.8 - 7.4 in dependence on the metabolic processes;