1. Components of blood Bloodstream

2. Human have; 4 ♀ & 6 ♂ liters of blood

6. CLONAL SELECTION Each lymphocyte during its development is committed to respond to one antigenic determinant. Accordingly each lymphocyte has a single type of antigen-specific receptor on its surface. Following contact with antigen, a single lymphocyte expands to form a clone of cells. Saunders Comprehensive Veterinary Dictionary, 3 ed. © 2007 Elsevier, Inc.

7. INFLAMMATION

8. BLOOD CLOTTING

9. WHAT HAPPENS WHEN YOU CUT YOURSELF? The clot dries, shrinks, hardens and forms a scab. The clot dries, shrinks, hardens and forms a scab. Fibers of fibrin form a mesh across the wound. Fibers of fibrin form a mesh across the wound. Soluble fibrinogen is changed into insoluble fibrin. Soluble fibrinogen is changed into insoluble fibrin. New skin forms under the scab. New skin forms under the scab. Blood cells get trapped in the mesh. Blood cells get trapped in the mesh. Platelets stick to the damaged area forming a plug. Platelets stick to the damaged area forming a plug. Pen knife slips and causes a deep cut. Pen knife slips and causes a deep cut. The scab drops off The scab drops off. Blood stops leaking out. Blood stops leaking out. Skin and blood vessels are damaged. Skin and blood vessels are damaged. End

10. Blood clotting Pen knife slips and causes a deep cut. Back

11. Blood clotting Pen knife slips and causes a deep cut. Skin and blood vessels are damaged. Back

12. Blood clotting Pen knife slips and causes a deep cut. Skin and blood vessels are damaged. Blood cells get trapped in the mesh. Back

13. Blood clotting Pen knife slips and causes a deep cut. Skin and blood vessels are damaged. Blood cells get trapped in the mesh. Blood stops leaking out. Back

14. Blood clotting Pen knife slips and causes a deep cut. Skin and blood vessels are damaged. Blood cells get trapped in the mesh. Blood stops leaking out. Platelets stick to the damaged area forming a plug. Back

15. Blood clotting Pen knife slips and causes a deep cut. Skin and blood vessels are damaged. Blood cells get trapped in the mesh. Blood stops leaking out. Platelets stick to the damaged area forming a plug. Soluble fibrinogen is changed into insoluble fibrin. Back

16. Blood clotting Pen knife slips and causes a deep cut. Skin and blood vessels are damaged. Blood cells get trapped in the mesh. Blood stops leaking out. Platelets stick to the damaged area forming a plug. Soluble fibrinogen is changed into insoluble fibrin. Fibers of fibrin form a mesh across the wound. Back

17. Blood clotting Pen knife slips and causes a deep cut. Skin and blood vessels are damaged. Blood cells get trapped in the mesh. Blood stops leaking out. Platelets stick to the damaged area forming a plug. Soluble fibrinogen is changed into insoluble fibrin. Fibers of fibrin form a mesh across the wound. The clot dries, shrinks, hardens and forms a scab. Back

18. Blood clotting Pen knife slips and causes a deep cut. Skin and blood vessels are damaged. Blood cells get trapped in the mesh. Blood stops leaking out. Platelets stick to the damaged area forming a plug. Soluble fibrinogen is changed into insoluble fibrin. Fibers of fibrin form a mesh across the wound. The clot dries, shrinks, hardens and forms a scab. New skin forms under the scab. Back

19. Blood clotting Pen knife slips and causes a deep cut. Skin and blood vessels are damaged. Blood cells get trapped in the mesh. Blood stops leaking out. Platelets stick to the damaged area forming a plug. Soluble fibrinogen is changed into insoluble fibrin. Fibers of fibrin form a mesh across the wound. The clot dries, shrinks, hardens and forms a scab. New skin forms under the scab. The scab drops off. Back