Fitness of the internal environment. Body fluids are potent buffers of concentrative properties such as osmotic pressure as well as pH.
D001769:Blood; D001826:Body Fluids; D002021:Buffers; D004548:Elasticity; D004553:Electric Conductivity; D006863:Hydrogen-Ion Concentration; D009995:Osmosis; D009997:Osmotic Pressure; D013395:Sucrose; D014783:Viscosity
D002021:Buffers; D013395:Sucrose