What percentage of plasma is made up of water?

Plasma is the liquid component of blood and consists of several components, with water being the most abundant. The majority of plasma's composition is water, which plays a vital role in maintaining blood volume and proper circulation. It helps transport nutrients, hormones, and waste products throughout the body.

The correct answer reflects that approximately 90% of plasma is indeed made up of water. This high water content is crucial for various physiological processes, as it creates an optimal environment for the various proteins, electrolytes, and other substances found in plasma to function effectively. The substantial water content aids in regulating body temperature and maintaining homeostasis in bodily functions.