Amali darah

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Amali darah

  1. 1. Lab Activity 22 Blood Institut Pendidikan Guru Malaysia PJM3106
  2. 2. Erythrocyte
  3. 3. Erythrocyte (RBC) <ul><li>Count: 4-6 million per mm 3 </li></ul><ul><li>Function: Transport of O 2 and CO 2 </li></ul>
  4. 4. Iron Deficient RBC <ul><li>More pale and smaller </li></ul>
  5. 5. Sickle Cell
  6. 6. Reticulocyte <ul><li>Count: 1-2% of RBC </li></ul><ul><li>RBC precursor </li></ul><ul><li>Increased when RBC turnover is high </li></ul><ul><li>Still contains nuclear fragments </li></ul>
  7. 7. Neutrophil (Granulocyte) <ul><li>Nuclei: 2 to 5 lobes connected by thin strands (polymorphonuclear) </li></ul><ul><li>Fine, pale lilac practically invisible granules </li></ul><ul><li>Lifespan of about 10 hrs </li></ul>
  8. 8. Neutrophil <ul><li>Count: 50-70% </li></ul><ul><li>3,000-7,000 per mm 3 </li></ul><ul><li>Fastest response of all WBC to bacteria </li></ul><ul><li>Functions: </li></ul><ul><ul><li>Phagocytic: engulf pathogens or debris in tissues </li></ul></ul><ul><ul><li>Release cytotoxic enzymes and chemicals </li></ul></ul>
  9. 9. Neutrophilic Band Cell <ul><ul><li>Young neutrophils are called band cells because of horseshoe shaped nucleus (band) </li></ul></ul>
  10. 10. Eosinophil (Granulocyte) <ul><li>Nucleus with 2 or 3 lobes connected by a thin strand </li></ul><ul><li>Large, uniform-sized orange-red granules </li></ul>
  11. 11. Eosinophil <ul><li>Count: 2-4% </li></ul><ul><ul><li>100-400 per mm 3 </li></ul></ul><ul><li>Functions: </li></ul><ul><ul><li>Phagocytic: engulf antibody-labeled materials </li></ul></ul><ul><ul><li>Release cytotoxic enzymes </li></ul></ul><ul><ul><li>Reduce inflammation </li></ul></ul>
  12. 12. Basophil (Granulocyte) <ul><li>Large, dark purple, variable-sized granules </li></ul><ul><li>Obscure the nucleus </li></ul><ul><li>Irregular, s-shaped, bi-lobed nuclei </li></ul>
  13. 13. Basophil <ul><li>Count: <1% </li></ul><ul><ul><li>20-50 per mm 3 </li></ul></ul><ul><li>Functions: </li></ul><ul><ul><li>Enter damaged tissues and release histamine and other chemicals that promote inflammation </li></ul></ul>
  14. 14. Monocyte (Agranulocyte) <ul><li>Nucleus is kidney or horse-shoe shaped </li></ul><ul><li>Pale cytoplasm </li></ul>
  15. 15. Monocyte <ul><li>Count: 2-8% </li></ul><ul><ul><li>100-700 per mm 3 </li></ul></ul><ul><li>Functions: </li></ul><ul><ul><li>Enter tissues to become macrophages </li></ul></ul><ul><ul><li>Engulf pathogens or debris </li></ul></ul>
  16. 16. Lymphocyte (Agranulocyte) <ul><li>Dark, oval to round nucleus </li></ul><ul><li>Cytoplasm sky blue in color </li></ul>
  17. 17. Lymphocyte <ul><li>Count: 20-30% </li></ul><ul><ul><li>1,500-3,000 per mm 3 </li></ul></ul><ul><li>Functions: </li></ul><ul><ul><li>Mount immune response by direct attack or via antibodies, mediates other cellular immune response, </li></ul></ul><ul><ul><li>Includes B and T cells </li></ul></ul>
  18. 18. Platelets <ul><li>Fragments of a bone marrow cell called a megakaryocyte </li></ul><ul><li>Count: 150-500,000 per mm 3 </li></ul><ul><li>Function: mediates blood clotting chemically and mechanically </li></ul>
  19. 19. Platelets Megakaryocytes Platelet
  20. 20. Hemoglobin Concentrations <ul><li>Normal hemoglobin concentration in females is 12-16 g/deciliter. </li></ul><ul><li>Normal hemoglobin concentration in males is 13-18 g/deciliter. </li></ul><ul><li>Hematocrit can be estimated from the hemoglobin concentration: </li></ul><ul><li>3x hemoglobin=hematocrit. </li></ul><ul><li>Normal hematocrit in females is 37-48%. </li></ul><ul><li>Normal hematocrit in men is 42-52%. </li></ul>
  21. 21. Gender Differences in Hb <ul><li>Testosterone stimulates synthesis of erythropoietin which in turn stimulates erythropoiesis (red cell formation) in the red marrow. </li></ul><ul><li>Lower values in women of reproductive age may also reflect their red cell losses due to menstruation. </li></ul>
  22. 22. ABO Blood Types <ul><li>RBC surfaces are marked by genetically determined glycoproteins </li></ul><ul><ul><li>The glycoprotein determines the blood type </li></ul></ul><ul><li>Plasma contains isoantibodies or agglutinins to the A or B antigens not found on your blood cells </li></ul>
  23. 23. Type A <ul><li>Type A: Display only antigen A </li></ul><ul><li>The plasma contains antibodies against Type B </li></ul>
  24. 24. Type B <ul><li>Type B: Display only antigen B </li></ul><ul><li>The plasma contains antibodies against Type A </li></ul>
  25. 25. Type AB <ul><li>Type AB: Display both antigens A & B </li></ul><ul><li>The plasma contains no antibodies </li></ul>
  26. 26. Type O <ul><li>Type O: Display neither antigen </li></ul><ul><li>The plasma contains antibodies against A and B </li></ul>
  27. 27. Blood Transfusions <ul><li>Only RBC are donated. </li></ul><ul><li>Transfusion Reactions: The recipients plasma interacts with the donors RBC </li></ul><ul><li>Causes clumping then hemolysis </li></ul>
  28. 28. RH blood groups <ul><li>People with Rh agglutinogens on RBC surface are Rh + . Normal plasma contains no anti-Rh antibodies </li></ul><ul><li>Antibodies develop only in Rh - blood type & only with exposure to the antigen </li></ul><ul><ul><li>Transfusion of positive blood </li></ul></ul><ul><ul><li>During a pregnancy with a positive blood type fetus </li></ul></ul><ul><li>Transfusion reaction upon 2nd exposure to the antigen results in hemolysis of the RBCs in the donated blood </li></ul>
  29. 29. Not Possible Not Possible Possible Possible
  30. 30. Coagulation Time <ul><li>Blood Clotting (coagulation) is a protective mechanism that minimizes blood loss when blood vessels are ruptured </li></ul><ul><li>Through a series of reactions, fibrin will form a meshwork to trap the RBC, forming a clot. </li></ul><ul><li>Normally blood clots within 2-6 minutes </li></ul>
  31. 31. The End The End

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