👉 The fluid in question is blood, a vital circulatory component that plays a crucial role in transporting oxygen, nutrients, hormones, and waste products throughout the body. Composed primarily of water (about 55%), it also contains red and white blood cells, platelets, proteins, and various dissolved substances. Blood's primary function is to facilitate gas exchange in the lungs, deliver essential nutrients to tissues, and remove metabolic waste products. This dynamic fluid circulates through the body's vascular system via arteries, veins, and capillaries, ensuring that every cell receives the necessary sustenance and maintaining overall physiological balance.
