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Cards In This Set
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What effects the results of your lab work?
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Agegenderlaboratory
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What tube do you use for CBCs?
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Lavender topwhole unclotted blood
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Explain the process of Erythropoeiesis
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Liver cells sense hypoxia and release erythropoietin.Erythrocytes form from stem cells in the flat bones(stem cells have the potential to become any blood cells).
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 Stages of Erythrocyte Development |
 Erythrocyte-->reticulocyte-->normobalst-->erythroblst-->proerythroblast |
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Severe changes in WBCs, Plts, RBCs, usually require what
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Bone marrow bx/ aspiration
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What shape are erythrocytes
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Biconcave to allow for larger surface area/ volume ratio as well as deformability to squeeze through microcirculation
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What is the normal lifespan (in days) for an erythrocyte
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120 days
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Normal RBC values for adult male/ female
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Adult Male: 4.6-6.2 million/mm3Adult Female: 4.2-5.4 million/mm3
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Cause of decrease in RBCs
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HemorrhageDecreased levels of components to make the cellslack of erythropoietinBone marrow suppressionHemolysis
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Causes of Polycythemia (excess RBCs)
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Primary (polycythemia vera)Secondary: high altitudes, Chronic obstructive lung diseasesmokersconditions with very small cellsDanger: increased viscosity and clotting
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