Approximately what percentage of plasma is composed of water?

Plasma is the liquid component of blood and plays a crucial role in transporting nutrients, hormones, and proteins throughout the body. It is primarily composed of water, accounting for a significant portion of its volume. Approximately 90 percent of plasma is water, which serves as a solvent for various substances and helps maintain blood volume and pressure.

This high water content allows for efficient transport of molecules and serves vital functions such as temperature regulation and pH balance. The remaining components of plasma include electrolytes, nutrients, waste products, hormones, and proteins, which are dissolved in this aqueous environment. This understanding of plasma composition is essential in the study of physiology and the functioning of the circulatory system.