In biology, the study of blood divides into two main sections: the liquid part, known as plasma, and the formed elements, which are the red and white blood cells and platelets.
Plasma accounts for about 55% of your total blood volume. Of the plasma, about 90% to 92% is water.
The other 8% to 10% includes dissolved proteins, glucose, mineral ions, hormones, and carbon dioxide.In other words, water is the solvent component of plasma, and because plasma transports all the other components, it’s what makes your blood flow and circulate throughout your body.