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38 Cards in this Set
- Front
- Back
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Red cells are nucleated, true or false?
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False
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What makes the formed elements in blood?
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Red bone marrow
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Where is red bone marrow found?
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Axial skeleton
Girdles Proximal epiphyses of the humerus and femur of adults |
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About how many RBCs are there in the entire body's blood?
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4-6 million
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Oxygen binds to what in an RBC?
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heme group
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Carbon dioxide binds to what in an RBC?
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Globin's amino acids
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What is the life span of an RBC?
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120 days
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White cells have a nucleus and organelles, true or false?
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True
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What is the role of neutrophils?
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Phagocytize bacteria
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Neutrophils make up what percentage of the WBCs?
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50-70%
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What are the roles of eosinophils?
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Kill parasitic worms
Inactivate some inflammatory chemicals of allergy |
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What percentage of the WBCs is made up of eosinophils?
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2-4%
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What is the role of basophils?
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Release histamine and other mediators of inflammation
Contain heparin |
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What percentage of WBCs is made up of basophils?
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.5-1%
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Basophils bind to what to release histamine?
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IgE
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What is the role of lymphocytes?
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Mount immune response by direct cell attack or via antibodies
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Where are most lymphocytes found?
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Imbedded in lymphatic tissue
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What percentage of the WBCs is made up of lymphocytes?
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40%
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What is the largest WBC?
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Monocyte
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What is the role of monocytes?
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Phagocytosis
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What percentage of WBCs is made up of monocytes?
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3-8%
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Platelets are derived from what progenitor?
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Megakaryocyte
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Platelets have what chemicals that act in the clotting process?
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Serotonin
Ca2+ enzymes ADP, PDGF |
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What substance regulates the formation of platelets?
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Thrombopoietin
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If not active in clotting, what is the lifespan of a platelet?
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10 days
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What substances keep platelets inactive?
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Nitric oxide
Prostacyclin |
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Plasma is made up of 90% what?
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Water
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What protein accounts for 60% of plasma's protein?
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Albumin
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What are the roles of albumin?
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Acts as a shuttle
Buffer Plasma osmotic pressure |
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36% of the plasma protein is what?
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Globulins - alpha, beta, gamma
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What is released by plasma cells during an immune response?
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Gamma antibodies
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What protein makes up 4% of plasma protein?
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Fibrinogen
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What organ produces fibrinogen?
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Liver
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What electrolytes are most often found in plasma?
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Na+
K+ Ca+2 |
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What are monocytes called once they move into tissues?
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Macrophages
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What protein in the plasma binds and transports iron?
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Transferrin
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What is the storage protein that binds excess iron?
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Apoferritin
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What system recognizes old RBCs and phagocytizes them?
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Reticuloendothelial system
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