Intracellular and extracellular fluid compartments. The extracellular fluid compartment is further subdivided into the interstitial fluid and the intravascular fluid compartments.<unk> s, bodily fluids, or biofluids are liquids within the human<unk> . In lean healthy adult men, the total<unk>  water is about 60% (60–67%) of the total<unk>  weight; it is usually slightly lower in women (52-55%). The exact percentage of fluid relative to<unk>  weight is inversely proportional to the percentage of<unk>  fat. A lean 70 kg (160 pound) man, for example, has about 42 (42–47) liters of water in his<unk> . The total<unk>  of water is divided into fluid compartments, between the intracellular fluid (ICF) compartment (also called space, or volume) and the extracellular fluid (ECF) compartment (space, volume) in a two-to-one ratio: 28 (28–32) liters are inside cells and 14 (14–15) liters are outside cells. The ECF compartment is divided into the interstitial fluid volume – the fluid outside both the cells and the blood vessels – and the intravascular volume (also called the vascular volume and blood plasma volume) – the fluid inside the blood vessels – in a three-to-one ratio: the interstitial fluid volume is about 12 liters, the vascular volume is about 4 liters. The interstitial fluid compartment is divided into the lymphatic fluid compartment – about 2/3, or 8 (6–10) liters, and the transcellular fluid compartment (the remaining 1/3, or about 4 liters). The vascular volume is divided into the venous volume and the arterial volume; and the arterial volume has a conceptually useful but unmeasurable subcompartment called the effective arterial blood volume.
Body fluid
Blood
Fluid compartments
Blood plasma
Muscle tissue
Human body
Serum 
Soft tissue