Starling forces 1/3 body water: extracellular space plasma volume(25%) interstitial space(75%) Regulating the disposition of fluid between two compartment (Law of Capillaries) Vascular system Interstitial space Hydrostatic pressure (流体静水压) Hydrostatic pressure Colloid oncotic pressure (tissue tension) (胶体渗透压) Colloid oncotic pressureStarling forces • 1/3 body water: extracellular space plasma volume (25% ) interstitial space (75% ) • Regulating the disposition of fluid between two compartment (Law of Capillaries) Vascular system Interstitial space Hydrostatic pressure （流体静水压） Hydrostatic pressure Colloid oncotic pressure (tissue tension) （胶体渗透压） Colloid oncotic pressure