👉 The additional fluid, often referred to as plasma or blood plasma when specifically discussing blood, is a vital component of the circulatory system. It constitutes about 55% of the total blood volume in a healthy adult and plays a crucial role in maintaining fluid balance, transporting nutrients, oxygen, hormones, and waste products throughout the body. Plasma is a clear, colorless liquid primarily composed of water (about 90%), but it also contains proteins, electrolytes, nutrients, and various other substances essential for blood's function. It acts as a medium that carries red blood cells, white blood cells, and platelets, facilitating immune responses, clotting, and the transport of vital substances. Understanding plasma's composition and functions is essential for comprehending how the body maintains homeostasis and responds to various physiological demands.
