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Totalwbc count

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University of Diyala/ College of Medicine Department of Physiology Physiology Lab WBC Blood Cells (WBCs)/Leukocytes Count Dr. Asmaa Abbas Ajwad January 14th 2020 1 Outlines • Introduction • Aims of WBCs Count Experiment • Methods and Procedure • Calculations • Some Medical Considerations 2 Introduction • Acting together, WBCs provide our body with powerful defenses against tumor and viral, fungal, bacterial, and parasitic infections. • WBCs (Leukocytes) are round shaped, nucleated cells. They are found throughout the body including the blood and lymphatic system. • The normal level of WBCs under basal condition of complete physical and mental rest is 4500-11000 cell/ mm3. A condition with WBCs level more than 11000 mm3 is called leukocytosis. The opposite condition, leukopenia, is an abnormally low WBCs count. • WBCs make up approximately 1% of the blood volume in a healthy adult. • The lifespan of WBCs varies from few days to few weeks. • The name "White Blood Cell" derives from the fact that after centrifugation of a blood sample, the WBCs are found in the Buffy coat, a thin layer of nucleated cells between the sedimented RBCs and the blood plasma, which is typically white in color. The scientific term leukocyte directly reflects this description, derived from Greek leuko - white, and cyte - cell. • Leucopoiesis is the process of WBCs/leucocytes production. 3 WBCs Classification • WBCs are classified by several ways. One type of classi ...
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