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19 Cards in this Set

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  • Back
bone 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 indicates bleeding in the upper GI tract; may be bright red or of "coffee ground" character
hematology
the study of blood and blood-forming tissues
hematopoiesis
blood cell production
hemoglobin
a protein-iron molecule that is the major component of erythrocytes and transports oxygen
hemolysis
destruction of erythrocytes
hemostasis
a homeostatic process of blood clotting and blood lysing
leukocyte
white blood cell
leukopenia
a total white blood count less than 4,000/µl
neutropenia
a reduction of the neutrophil count to less than 1000 to 1500/µl (1 to 1.5 × 109/L)
pancytopenia
marked decrease in the number of RBCs, WBCs, and platelets
phagocytosis
a process by which WBCs ingest or engulf any unwanted organism and then digest and kill it
reticulocyte
an immature erythrocyte; measurement of the number 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 cells
thrombocyte
platelet
thrombocytopenia
a reduction of the platelet count below the normal range of 150,000 to 400,000/µl (150 to 400 × 109/L)