HEMATOLOGICAL DISORDERS Structure & Function of Blood Components ✅ Definition:Blood is a specialized connective tissue that transports oxygen, nutrients, hormones, and waste products throughout the body. It consists of plasma (55%) and formed elements (45%). ✅ Composition of Blood: Component Percentage Function Plasma 55% of blood volume Carries nutrients, hormones, waste, & clotting factors. Red Blood Cells (RBCs, Erythrocytes) 40-45% (Hematocrit) Oxygen transport (via Hemoglobin). White Blood Cells (WBCs, Leukocytes)