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69 Cards in this Set
- Front
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Hormones that regulate the differentiation and proliferation of particular progenitor cells
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Hemopoeitic Growth Factors
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Increases the number of RBC precursors
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Erythropoietin / EPO
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Hormone produced by the liver that stimulates formation of platelets from megagaryocytes
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Thrombopoietin / TPO
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Small glycoproteins that are produced by red bone marrow cells, leukocytes, macrophages, fibroblasts, and endothelial cells that regulate develpment of different blood cell types
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Cytokines
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Important families of Cytoikines
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Colony Stimulating Factors (CSF's) and Interleukins
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Component of Hemoglobin, Composed of four polypeptide chains
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Globin
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Component of Hemoglobin, four non-protein pigments
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Hemes
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Beginning of RBC Production
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Red bone marrow with a precursor cell called a proerythroblast
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RBC Production
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Proerythroblast divides several times, producing cells that begin to sythensize hemoglobin. Ultimtely, a cell near the end of the development sequence ejects it nucleus an becomes a reticulocyte.
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Cell near the end of the RBC development sequence that loses it's nucleus
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Reticulocyte
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Cellular Oxygen Defficiency, occurs if too little oxygen enters the blood
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Hypoxia
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Cells that contain a nucleus but no hemoglobin
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White Blood Cells (WBC's) / Leukocytes
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Classification of WBC's
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Granular and Agranular
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Chemical filled cytoplasmic vesicles in WBC's
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Granules
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Types of Granule Leukocytes
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Neutrophils, Eosinophils, and Basophils
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Types of Agranular WBC's
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Lympphocytes and Monocytes
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An increase in the number of WBC's for protective response to stresses such as invading microbes, strenous exercise, anesthesia, and surgery
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Leukocytosis
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Abnormally low level of WBC's
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Leukopenia
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Leave the bloodstream and collect at points of pathogenic invasion or inflamation, never return
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Granulocytes and Monocytes
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Continually recirculate from blood to interstitial spaces of tissues to lymphatic fluid back to blood
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Lymphocytes
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Process by which WBC's leave the bloodstream, roll along the endothelium, stick to it, and then squeeze between endothelial cells
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Emigration
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Molecules that help WBC's stick to endothelium
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Adhesion Molecules
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Active in Phagocytosis, ingest bacteria and dispose of dead matter
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Neutrophils and mactophages
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Process by which several different chemicals releaed by microbes and inflamed tissues attract phagocytes
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Chemotaxis
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WBC's that respond most quickly to destruction by bacteria
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Neutrophils
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Proteins released by Neutrophis that exhibit a broad range of antibiotic activity against bacteria
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Defensins
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WBC's that arive to sight of infection later than neutrophis, but arive in larger numbers and destroy more microbes
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Monocytes
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WBC's that leave the capillaries and enter the tissue fluid, release enzymes such as histaminase, phagocytize antigen antibody complexes
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Eosinophils
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Often indicates an allergic condition or parasitic infection
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High Eosinophil Count
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WBC's that leave the capillaries, enter tissues, and liverate heparin, histamine, and serotonin at sites of inflamation
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Basophils
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Types of Lmyphocytes
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B cells, T cells and Natural Killer Cells
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Effective in destroying bacteria and inactivating their toxins
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B Cells
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Attack viruses, fungi, transplaned, cells, cancer cells, and some bacteria
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T Cells
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Attack a wide variety of infectious microbes and certian spontaneously arising tumor cells
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Natural Killer Cells
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Ordered by a physician to detect infection or inflammation, determine the effects of possible poisoning by chemicals or drugs.
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Differential White Blood Cell Count
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Myeloid stem cells deveolp into megakaryocyte colony forming ells that, in turn, develp into precursor cells called megakaryoblasts.
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Thrombopoetin
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Enclosed by a piece of the plasma membrane breakes off from the magakaryocytes in red bone marrow an then enters the blood circulation
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Platelet
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Function of platelets
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Help stop blood loss from damaged blood vessels by forming a platelet plug. Contain granules that when released help clot
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Valuable test that screens for anemia and varoius infections
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Complete Blood Count
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Sequence of responses that stops bleeding
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Hemostasis
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3 Mechanisms that reduce blood loss
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1. Vasuclar Spasm
2. Platelet Plug Formation 3. Bloot clotting (Coagulation) |
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When arteries or arterioles are dmaged, the circularily arranged smooth muscle in their walls contract immediately
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Vascular Spasm
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Chemicals in the vesicles of platelets that form blood clots
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Thromboxane A2, a prostoglandidn: fibrin-stabilizing factor.
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Hormone in platelets that can cause proliferation of vascular endothelial cells, vascular smooth muscle fibers, and fibroblasts to help repair damaged blood vessel walls.
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Platelet derived growth factor (PDGF)
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Platelets contact and stick to parts of a damaged blood vessel, such as collogen fibers of the connective tissue inderlying the damaged endothelial cells.
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Platelet Adhesion
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Once platelets have adhered, they extend many projections that enable them to contact and interact with one another, and they liverate the contents of their vesicles.
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Platelet Release Reaction
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Gathering of new platelets to old platelets becasue of ADp
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Platelet Aggregation
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Plasma minus clotting proteins
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Serum
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Gel in blood that consists of a network of insoluble protein fibers called fibrin in which the formed elements of blood are trapped
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Clot
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Clotting of undamaged blood vessels
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Thrombosis
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Extrinsic Blood Clotting occurs
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Rappidly, Faster than Intrinsic
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Tissue protien that comes from outside the blood vessel involved in Extrinsc Pathway
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Tissue Factor / Thromboplastin
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Thromboplastin / Tissue Factor is a mixture of
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Lipoproteins and phospholipids released from the surface of damaged cels
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Once X factor is activated
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It combines with Factor V in the presence of Ca to form the active enzyme prothrombinase, completing the Extrinsic Pathway
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Vitamin K is necesary for
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Formation of Clotting factors by hepatocytes: Factors II (prothrombin), VII, IX, and X
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Soluablity of VitaminK
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Fat Soluable
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Dissolves small, inappropriate clots
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Fibronolytic System
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A clot does not extend beyond a wound site becasuse
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Fibrin abslorbs thrombin into the clot, and dispersal of some of the clotting factors by the blood, their concentrations are not high enough to bring about widespread clotting
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Powerful inhibitor of platelet adhesion, opposes the actions of Thromboxane A2, produced by endothelial cells and WBC's
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Prostacyclin
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Antithrombin, Heparin, Activated Protein C
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Anticoagulants
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Blocks the Action factors of XII, XI, IX, X, and II
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Antithrombin
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Produced by mast cells and basophils, combines with antrithrombin and increases it's effectiveness in blocking thrombin
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Heparin
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Inactivates factors V and VIII, the two major clotting factors not blocked by antirthrombin, and enhances activity of plasminogen activators
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Activated Protein C
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Clotting in an unbroken blood vessel
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Thrombosis
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Blood clot, bubble of air, fat from broken bones, or a piece of debris that is transported by the blood stream
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Embolus
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Inhibits vaoconstriction and platelet aggregation by blocking synthesis of thromboxane A2
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Aspirin
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The surface of erythrocytes contain a genetically determined assortment of glycoproteins and glycolipids that can act as antigens
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Isoantigens or Agglutinogens
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Blood type is based on the display of
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Antigens on RBC's
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To react with isoantigens, blood plasma contains
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Isoantibodies or Agglutinins
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