👉 The presenting fluid, also known as serum or plasma, is the liquid component of blood that carries out a wide array of vital functions. It comprises about 55% of blood volume and is primarily composed of water, proteins, electrolytes, nutrients, hormones, and waste products. The presenting fluid is crucial for transporting oxygen and nutrients to tissues, removing carbon dioxide and other waste products, maintaining blood pressure, and supporting immune function. It also plays a key role in regulating body temperature and pH levels. In essence, the presenting fluid is the main component that facilitates these essential physiological processes within the body.