👉 The top fluid, often referred to as blood plasma, is the most abundant component of blood and makes up about 55% of its total volume. It's primarily water, but also contains proteins, nutrients, hormones, waste products, and various minerals. Plasma serves as a medium for transporting these substances throughout the body, facilitating essential physiological processes like nutrient delivery, immune response, and waste removal. Its composition and functions are critical for maintaining homeostasis and overall health.