Med-Surg Nursing - 29
Terms
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- 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)