Now, blood plasma is actually the extracellular matrix that we spoke of earlier, and it makes up about 55% of the volume of our blood. Now, the blood plasma is a fluidlike substance that consists of many different things. So let's discuss some of the things that we normally find inside our blood. So probably the thing that predominates not probably, but definitely the thing that predominates inside our blood is water. In fact, water is the major solvent of our cells. And water is also used by the proteolytic enzymes to hydrolyze different types of molecules.