Anatomy
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Hematology | Study of blood and it's disorders
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Plasma | Liquid part (55%)- produced by liver
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Leukocytes | White blood cells
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Thrombocytes | Platelets
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Erythrocytes | Red blood cells
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Functions of blood-transportation | 1. Gases
2. Waste products
3. Nutrients
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Functions of blood | 1. Transportation
2. Regulation
3. Protection
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Functions of blood- regulation | 1. Body temp
2. pH
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Functions of blood-protection | 1. Against pathogens
2. Clotting
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pH | 7.35-7.45
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Blood volume | 5 liters
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Hematopoiesis | Blood cell formation
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Red bone marrow | myeloid stem cell
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RBC Structure | spherical, inoculated, lack of mitochondria
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RBC function | Carries hemoglobin molecules which transport oxygen
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Tallquist test | Measures level of hemoglobin in RBCs
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Hematocrit | % of RBC volume
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RBC lifespan | 120 days
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Anemia | RBC deficiency, hemoglobin deficiency, or both
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Iron deficiency anemia | low hemoglobin-low O2-fatigue
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Pernicious anemia | Lack of it. B12-low RBC count
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Sickle-cell anemia | Fatal hereditary disease caused by abnormal hemoglobin
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Polycythemia vera | Excessive increase in number of RBCs
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Erythropoietin | Rate controlled by a hormone(produced by kidneys)
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White Blood Cell Structure | Nuclei and large
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Neutrophils | Engulf bacteria and cellular debris (most)
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Basophils | Hypersensitivity, release histamine (least)
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Eosinophils | Parasitic infections, allergic response
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Lymphocytes | Produce antibodies, regulate the immune response
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Monocytes | Engulf cellular debris
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Leukocytosis | High WBC count
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Leukopenia | Low WBC count
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Leukemia | Large increase in WBCs
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Infectious mononucleosis (mono) | High numbers of large lymphocytes caused by epstein-barrvirus virus
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AIDs | Decreased WBCs- attacks the lymphocytes
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Serum | Plasma minus clotting proteins
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Hemophillia | Inherited x-linked
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Thrombocytopenia (purpura) | Low platelets, petechia (clotting episodes)
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Aspirin | Blocks prothrombin-thrombin
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Heparin | Blocks fibrinogen-fibrin
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Innate (nonspecific) defense | Fast
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Adaptive (specific) defense | Slow
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First line of defense | skin-mucous membranes-secretions of skin and mucous membranes
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Second line of defense | phagocytic cells (neutrophils and monocytes)-antimicrobial proteins-inflammatory response (basophils)
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Third line of defense | Lymphocytes-antibodies-macrophages
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Lymphocytes | Immune cells
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B-cells | Produce antibodies, made in bone marrow, humoral immunity
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T-cells | Release chemicals to kill, originate in thymus, cell-mediated immunity
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