In terms of blood composition, what is plasma mainly composed of?

Plasma is primarily composed of water, which accounts for about 90-92% of its total volume. In addition to water, plasma contains various solutes, including electrolytes, nutrients, hormones, waste products, and proteins such as albumin, globulins, and fibrinogen. These components play crucial roles in maintaining osmotic balance, transporting substances, and facilitating blood clotting and immune responses. The significant water content enables plasma to function effectively as the medium for these various solutes, thereby supporting numerous physiological processes within the body. This composition showcases the vital role of plasma in circulation and overall homeostasis.