What percentage of water is found in blood plasma?

Blood plasma is primarily composed of water, which makes up approximately 90% of its total volume. This high percentage of water is critical for various physiological functions, including transporting nutrients, hormones, and waste products throughout the body. The presence of water in plasma also helps maintain blood pressure and volume, facilitating efficient circulation.

The high water content significantly aids in regulating body temperature and supports the biochemical reactions that occur within the circulatory system. Understanding this percentage is essential for comprehending how the body maintains homeostasis and the role of fluids in overall health.