👉 The major fluid in the human body is blood, a complex mixture primarily composed of water (about 60%), along with proteins, nutrients, hormones, waste products, and cells. Blood transports oxygen and essential nutrients to tissues while carrying away carbon dioxide, toxins, and metabolic waste. It also plays a crucial role in the immune system by carrying white blood cells that fight infections and in clotting to prevent excessive bleeding. This vital fluid circulates through the body via the heart, blood vessels, and capillaries, ensuring all cells receive necessary sustenance and maintaining overall homeostasis.
