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25 Cards in this Set
- Front
- Back
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pulmonary circulation
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heart to lungs
lungs to heart |
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systemic circulation
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heart to body
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arterial blood is...
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oxygenated-arteries, aorta, arterioles
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venous blood is...
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deoxygenated - venules, veins
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capillary blood is...
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arterial and venous mix
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antecubital veins....3
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median
cephalic bascillic |
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plasma
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-fluid portion
-water, ions, nutrients -55-60% of total blood volume |
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serum
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-plasma minus clotting factors
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cellular components in blood...3
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erthryocytes, leukocytes, platelets
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erythrocyte - red blood cell
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-anucleated
-contains hemoglobin, binds to oxygen, carries h+ ion, carries some co2 -life span=120 days |
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leukocytes - white blood cell
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-granulocytes - neutrophils, basophils, eosinophils.
-monocytes -lymphocytes |
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largest wbc
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monocytes - phagocytic, life span in months
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smallest wbc
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lymphocytes, immune system, life span in years
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platelets=
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thrombocytes - cytoplasmic fragments of megakaryocytes.
-produced in bone marrow -function in hemostasis -life span = 7-10 days |
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additive tubes - srlglg
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-sterile
-red -light blue -green -lavender -gray |
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accuracy=
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nearness to the true value
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precision
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reproducibility
-how close together repeat measurements are to each other |
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reliability
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ability to retain accuracy and precision over time
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primary standard
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reference material of known, fixed composition
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secondary standard
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analyte concentration has been established by comparison to a primary standard (sometimes called calibrators)
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standard deviation
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the measure of imprecision
-greater the SD, the more imprecise |
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CV
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coefficient of variation
-CV=(100xSD)/mean -allows comparison of precision between methods |
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delta checks
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compares the same patients levels at different days
-another level of quality control -method for monitoring precision and accuracy of lab tests |
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normal range=
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+/- 2 SD of a carefully selected "normal and healthy" population.
-minimum of 25 individuals |
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normal range percentages
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within one SD = 68%
-within two SD = 95% -within three SD = 99% |
