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chapter 29

med surg

bonr marrow the blood-forming tissue that fills the central core of bones
erythrocyte red blood cell
erythropoiesis process of red blood cell production
fibrinolysis a process resulting in the dissolution of fibrin to maintain blood in its fluid form
hematemesis vomiting of blood that indiacates bleeding in the upper GI tract; may be bright red or of "coffee ground" character
hematology the study of blood and blood-forming tissues
hematopoieses blood cell production
hemoglobin a protein-iron molecule that is the major compnent of erythrocytes and transports oxygen
hemolysis destruction of erythrocytes
leukopenia a total white blood count less than 4,000/ul
neutropenia a reduction of the neutrophil count to less than 1000 to 1500/ul (1 to 1.5 x 109/L)
pancytopenia marked decrease in the number of RBC's, WBC's, and platelets
phagocytosis a process by which WBC's ingest or engulf any unwanted organism and then digest and kill it
reticulocyte an immature erythrocyte; measurement of then umber of reticulocytes is a useful means of evaluating the rate and adequacy of erythrocyte production
stem cell a non-differentiated immature blood cell found in the bone marrow that is a precursor to all blood cellls
thrombocyte platelet
thrombocytopenia reduction of the platelet count below the normal range of 150,000 to 400,000/ul (150 x 400 x 109/L)
Created by: crystalih