👉 The priority fluid is the most critical type of fluid in the circulatory system, primarily responsible for transporting oxygen and essential nutrients to cells while removing waste products. Comprising about 55% of total blood volume, it includes red blood cells (erythrocytes), white blood cells (leukocytes), and platelets (thrombocytes). Red blood cells, packed with hemoglobin, are the primary priority fluid carriers of oxygen from the lungs to tissues. This fluid also plays a crucial role in immune response and clotting, making it indispensable for maintaining cellular health and overall bodily functions.
