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BIOL 2402 CHP.19

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Term
Definition
ABO Blood Group   Blood-type classification based on the presence or absence of A and B glycoprotiens on the erythrocyte membrane surface.  
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Agglutination   Clustering of cells into masses linked by antibodies  
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Agranular Leukocytes   Leukocytes with few granules in their cytoplasm EX: Monocytes ,Lymphocytes  
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Albumin   54%, osmotic pressure of blood along w/ Na+ blood buffer  
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Anemia   Deficiency of red blood cells or hemoglobin  
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Antibodies   (Immunoglobins or Gamma Globulins) antigen-specific protiens produced by specialized B lymphocytes that protect the body by binding to foreign objects such as bacteria and viruses  
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Anticoagulant   substance such as heparin that opposes coagulation  
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antithrombin   anticogulant that inactivates facator X and opposes the conversion of prothrombin (factor II) into thrombin in the common pathway  
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B Lymphocytes   (B Cells) lymphocyes that defend the body against specific pathogens and thereby provide specfic immunity  
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Basophils   WBC; less that 0.5-1% in blood; Has Granules(deep blue); Release chemicals that medicate inflammation and allergic respones  
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Bilirubin   Yellowish bile pigment produced when iron removed from heme and is further broken down into waste products  
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Biliverdin   Green bile pigment produced when the non-iron portion of heme is degraded into a waste product; converted to bilirubin in the liver  
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Blood   Liquid connective tissue composed of formed elements - erythocytes, leukocytes, and platelets - and a fluid extracellular matrix called plasma; component of the cardiovascular system  
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Bone Marrow Biopsy   Diagnostic test of a sample of red bone marrow  
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Bone Marrow Transplant   Treeatment in which a donor's healthy bone marrow with its stem cells replaces diseased or damages bone marrow of a patient  
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Buffy Coat   Thin,pale layer of leukocytes and platelets that separates the erythrocytes from the plasma in a sample of centrifu  
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Carbaminohemoglobin   Compound of carbon dioxide and hemobglobin, and one of the ways in which carbon dioxide is carried in the blood  
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Clotting Factors   Group of 12 identified substances active in coagulation  
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Coagulation   Formation of a blood clot; part of the process of hemostasis  
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Colony-Stimulating Factors(CSFs)   Glycoproteins that trigger the proliferation and differenation of myeloblasts into grammer leukocytes EX: Basophils, Neutrophils, and Eosinophils  
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Common Pathway   Final Coagulation pathway activated either by the intrinsic or the extrinsic pathway, and ending in the formation of a blood clot  
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Cross Matching   Blood test for for identification of blood type using antibodies and small samples of blood  
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Cytokines   Class of proteins that act as autocrine or paracrine signaling molcules; in the cardiovascular system, they stimulate the proliferation of progenitor cells and help to stimulate both nonspecific and specifc resistance to disease  
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Defensins   Antimicrobial proteins released from neutrophils and macrophages that create openings in the plasma membranes to kill cells  
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Deoxyhemoglobin   Molecule of hemoglobin w/o an oxygen molecule bound to it  
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Diapedesis   (Emigration) process by which leukocytes squeeze through adjacent cells in a blood vessel wall to enter tissue  
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Embolus   Thrombus that has broken free from the blood vessel wall and entered the circulation  
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Emigration   (Diapedesis) process by which leukocytes squeeze through adjacent cells in a blood vessel wall to enter tissue  
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Eosinophil   WBC; 1-4% in blood ; Has Granules(deep red); Destroy invaders(antibody-coated parasites)  
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Erythrocyte   RBC; transports oxygen and carbon dioxide; composed mostly of hemoglobin; mature myeloid blood cells  
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Erythroproietin(EPO)   Glycoprotein that triggers the bone marrow to produce RBCs; secreted by the kidney in response to low oxygen levels  
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Extrinsic Pathway   Initial coagulation pathway that begins with tissue damage and results in the activation of common pathway  
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Ferritin   Protein-containing storage form of iron found in the bone marrow, liver, and spleen  
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Fibrin   Insoluble, filamentous protein that forms the structure of a blood clot  
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Fibrinogen   Plasma protein; 7%, produced in the liver and involved in blood clotting  
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Fibrinolysis   Gradual degradation of a blood clot  
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Formed Elements   Cellular components of blood; that is erythrocytes, leukocytes, and platelets  
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Globin   Heme-containing globular protein that is constituent of hemoglobin  
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Globulins   Plasma Protein; 30%, protein that binds to lipids and fat solute vitamins  
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Granular Leukocytes   Leukocytes w/ abundant granules in their cytoplasm EX: neutrophils, eosinophils, and basophils  
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Hematocrit   Volume percentage of erythrocytes in a sample of centrifuged blood  
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Heme   Red, iron-containing pigment to which oxygen binds in hemoglobin  
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Hemecytoblast   Hemopietic stem cell that gives rise to the formed elements of blood  
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Hemoglobin   Oxygen in blood that gives it is red color  
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Hemolysis   Destruction(lysis) of erythrocytes and the release of their hemoglobin into circulation  
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Hemolytic Disease of the Newborn(HDN)   (Erythroblastosis Fetalis) disorder causing agglutination and hemolysis in an Rh+ fetus or newborn of an Rh- mother  
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Hemophilia   Genetic disorder characterized by inadequate synthesis of clotting factors  
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Hemopoiesis   Production of the formed elements of blood  
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Hemopoietic Growth Factors   Chemical signals including erythropoietin, thrombopoietin, colony-stimulating factors and interleukins that regulate the differentiation and proliferation of particular blood progenitor cells  
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Hemopoietic Stem Cell   Type of pluripotent stem cell that gives rise to the formed elements of blood(hemocytoblasts)  
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Hemorrhage   Excessive bleeding  
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Hemosiderin   Protein-containing storage form of iron found in the bone marrow, liver, and spleen  
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Hemostasis   Physiological process by which bleeding ceases  
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Heparin   Short-Acting anticoagulant stored in mast cells and released when issues are injured, opposes prothrombin  
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Hypoxemia   Below- normal level of oxygen saturation of blood (typically<95%)  
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Interleukins   Signaling molecules that may function in hemopoiesis, inflammation, and specific immune response  
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Intrinsic Pathway   Initial coagulation pathway that begins w/ vascular damage or contact w/ foreign substances, and results in the activation of the common path  
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Leukemia   Cancer involving leukocytes  
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Leukocyte   WBCs  
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Leukocytosis   Excessive leukocyte proliferation  
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Leukopenia   Below-Normal production of leukocytes  
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Lymphocytes   WBC; 20-35% in blood; no granules; specific responses to invaders including antibody production  
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Lymphoid Stem Cell   Type of hemopoietic stem cells that gives rise to lymphocytesm including various T cells, B Cells, and NK cells, all of which function in immunity  
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Lymphoma   Form of cancer in which masses of malignant T and/or B lymphocytes collect in lymph nodes, the spleen, the liver, and other tissues  
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Lysozyme   Digestive enzymes w/ bacterial properties  
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Macrophage   Phagocytic cell of the myeloid lineage; a mature monocyte  
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Megakaryocyte   Bone marrow cell that produces platelets  
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Memory Cell   Type of B or T lymphocyte that forms after exposure to a pathogen  
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Monocyte   3-8% in blood; WBC; no granules; ingest and destroy invaders and antigen presentation  
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Myeloid Stem Cells   RBCs and WBCs  
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Natural Killer (NK) Cells   Cytotoxic lymphocytes capable of recognizing cells that do not express "self" proteins on their plasma membrane or that contain foreign or abnormal markers; provides generalized, nonspecific immunity  
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Neutrophils   WBC; 50-70% in blood ; has granules(fine; light pink to light purple) ; ingest and destroy invaders  
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