👉 Adults fluid, also known as blood plasma, is a vital component of the circulatory system, making up about 55% of total blood volume. It is a colorless, straw-colored liquid primarily composed of water, but also contains proteins, glucose, electrolytes, hormones, and waste products. This fluid serves multiple crucial functions: it transports nutrients, oxygen, and hormones throughout the body, helps regulate body temperature through sweating, and plays a key role in blood clotting and immune responses. Additionally, it acts as a medium for the transport of waste products to be eliminated by the kidneys and helps maintain blood pressure and volume.