Blood

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Author:
vad200281
ID:
127412
Filename:
Blood
Updated:
2012-01-12 16:13:03
Tags:
Blood
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Description:
Blood Composition
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  1. Hematopoiesis (hemopoiesis)
    Blood cell formation that occurs in the red bone marrow
  2. Hematocrit
    Precentage of erythrocytes that normaly constitute about 45% ot the total volume of the blood
  3. Erythropoiesis
    • Hemocytoblast
    • Proerythroblast
    • Early erythroblast (ribosome synthesis)
    • Late erythroblast (hemoglobin accumulation)
    • Normoblast (ejection of nucleus)
    • Reticulocyte
    • Erythrocyte
  4. Diapedesis
    A process when WBCs are able to slip out of the capillary blood vessels
  5. Amoeboid motion
    Leukocytes form flowing cytoplasmic extensions that move them along.
  6. Positive chemotaxis
    Chemical trail of molecules released by damage cells or other leukocytes
  7. Granulocytes
    • Neutrophils: 3-7x103 microL(mm3)---50-70%. PMNs-polymorphonuclear
    • Eosinophils: 100-400 microL(mm3)---2-4%
    • Basophils: 20-50 microL(mm3)---0.5-1%
  8. Agranulocytes
    • Lymphocytes: 1.5-3x103 microL(mm3)---25%
    • Monocytes: 100-700 microL(mm3)--3-8%
  9. Respiratory burst
    Oxygen is actively metabolized to produce potent germ-killer oxidizing substances such as bleach and hydrogen peroxide, and defensin-mediated lysis occurs.
  10. Leukocyte formation
  11. Platelets
    Cytoplasmic fragments of large cell megakaryocyte
  12. Hemostasis
    Stoppage of bleeding

    • 1.Vascular spasm
    • 2.Platelet plug formation
    • 3.Coagulation

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