Complex sentence: The viscosity of normal plasma varies with temperature in just the same way as does that of its solvent water, a 5 ° C increase of temperature in the physiological range reduces plasma viscosity by about 10%.
Split into simpler sentences: The viscosity of normal plasma varies with temperature in the same way that its solvent water does. A 5 ° C increase of temperature in the physiological range reduces plasma viscosity by about 10%.