The document discusses the functions and components of blood. It describes the process of blood clotting, which involves platelets, coagulation factors and fibrin to form a clot. It also summarizes hematopoiesis, the process where stem cells in the bone marrow develop into the various formed elements of blood including red blood cells, white blood cells and platelets. Furthermore, it covers the different blood types defined by the ABO and Rh blood group systems and their implications for blood transfusions.

4. Human blood smear X 500

7. Hematopoiesis

20. Hemoglobin Breakdown

23. Leukocytes

24. Diapedesis http://www.whfreeman.com/immunology/CH01/diapedesis.htm

40. Platelet Plug Formation

46. ABO Blood Groups

49. Agglutination Reaction

55. Thank You