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Hematologic SystemMedical Surgical Nursing

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What is included in the hematological system?
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Bone marrow, blood, spleen and lymph system
Where does hematopoiesis occur?
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In the red bone marrow found in flat and irregular bones like the long bones, pelvic bones, vertebrae, sacrum, sternum ribs, flat cranial bones and scapulae
What are the three major functions of blood?
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Transportation of oxygen, nutrients, hormones and waste products Regulation of fluid, electrolytes and acid base Protection by clotting and combating infections
What does Serum refer to?
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Plasma minus the clotting factors
What is the primary function of erythrocytes?
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transport of gasses and assisting in maintaining acid base balance
What is the primary function of leukocytes?
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Protecting the body from infection
What is the primary function of thrombocytes?
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Blood coagulation
What triggers erythropoeisis?
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Hypoxia
What organ releases erythropoietin to stimulate RBC production?
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The kidneys
The ________ is an immature erythrocyte.
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Reticulocyte
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How long does it take for a reticulocyte to mature into a RBC?
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48 hours
Hemolysis is the removal of old blood cells from the circulation by monocytes and macrophages. It usually occurs in the...
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Bone marrow, liver and spleen
What is produced by the hemolysis of RBC?
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Bilirubin
What are the two agranulocytic leukocytes?
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lymphocytes and monocytes
What is the primary function of granulocytes?
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Phagocytosis
What is the primary phagocytic WBC involved in acute inflammatory responses?
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Neutrophils
What is the difference between a banded neutrophil and a segmented neutrophil?
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Band-immature, not as effective at phagocytosis Segmented-mature
________ are the WBC responsible for engulfing antigen-antibody complexes formed during allergic responses and they also phagocytize parasites.
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Eosinophils
_______ is the WBC involved in the allergic response. When they degranulate they release heparin, serotonin and histamine.
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Basophils
_______ are the WBC involved in cellular and humoral immunity.
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Leukocytes
  
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