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Blood

Blood. The primary function of blood is transportation. It carries nutrients and oxygen to all body cells, then eliminates carbon dioxide and other waste products. Blood Plasma (also known as serum). The liquid matrix of blood (blood minus its cells)

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Blood

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  1. Blood The primary function of blood is transportation. It carries nutrients and oxygen to all body cells, then eliminates carbon dioxide and other waste products.

  2. Blood Plasma (also known as serum) • The liquid matrix of blood (blood minus its cells) • Composed primarily of water with other dissolved substances such as nutrients salts and hormones. • Contains antibodies which help protect the body against microorganisms

  3. The Formed Elements Red Blood Cells ,White Blood Cells and Platelets

  4. Red Blood Cells • Called Erythrocytes • Disk shaped and lacking a nucleus • Transport oxygen to cells and carbon dioxide away from cells • Contains hemoglobin • An iron containing proteins which reversibly binds to oxygen

  5. White Blood Cells • Leukocyte • Immune Functions (defense against microorganisms) • Neutrophils and Monocytes: phagocytosis • Lymphocytes: produce antibodies or directly attack foreign cells • Eosinophils: protects against irritants that cause allergies • Basophils: produce heparin which inhibits clotting

  6. Platelets • Thrombocytes • Play an essential role in blood clotting • Clotting factors released at the injury site produce prothrombin activator • Prothrombin activator and calcium convert prothrombin to thrombin • Thrombin triggers the formation of fibrin, which traps RBCs to form clots

  7. Blood Types The ABO and Rh Systems

  8. The ABO System

  9. The Rh System • Rh-Positive: Rh factor antigen present in RBCs • Rh-Negative: Rh factor antigen not present in RBCs • Anti-Rh does appear in the PLASMA if Rh positive RBCs have been introduced into their bodies

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