Blood Composition and Functions

📋 Course Outline

1. Blood Composition
2. Plasma Components
3. Formed Elements
4. Blood Functions
5. Transportation Roles
6. Regulatory Functions
7. Protective Functions
8. Hematopoiesis Process
9. Blood Cell Sites
10. Erythropoiesis Regulation
11. Red Blood Cell Disorders
12. White Blood Cell Types

📖 1. Blood Composition

🔑 Key Concepts & Definitions

• Plasma: The liquid, straw-colored component of blood, comprising about 55% of blood volume, containing water, proteins, electrolytes, nutrients, hormones, and waste products.
• Formed Elements: The cellular components of blood, including red blood cells (erythrocytes), white blood cells (leukocytes), and platelets (thrombocytes).
• Erythrocytes (Red Blood Cells): Biconcave, anucleate cells responsible for oxygen and carbon dioxide transport via hemoglobin.
• Leukocytes (White Blood Cells): Cells involved in immune defense, classified into granulocytes (neutrophils, eosinophils, basophils) and agranulocytes (lymphocytes, monocytes).
• Platelets (Thrombocytes): Small cell fragments that facilitate blood clotting and wound healing.
• Hemoglobin: The iron-containing protein in erythrocytes that binds oxygen for transport.

📝 Essential Points