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3-26-07 - Ÿ-1Circulatory system ŸCardiovascular system...

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Unformatted text preview: Ÿ-1Circulatory system: ŸCardiovascular system: blood, heart, blood vesselsŸLymphatic system: lymph + vesselsŸBasics: connective tissue, 5L (volume), ~8% of body weightŸFlow:ŸArterial: away from the heartŸVenous, towards the heartŸOxygenated: redŸDeoxygenated: blue or deep redŸViscosity (resistance to flow): 4.5-5.5, whereas water is 1.0ŸBlood composition (formed element)ŸErythrocytes = ~5million per mL (most abundant cell), Leukocytes, ThrombocytesŸPlasma: fluid portion = 55% of whole bloodŸHematocrit: ~45% of red blood cells in blood by volume (higher for males than femalesŸBlood Plasma: ŸFluid portion = 90% waterŸPlasma proteins: viscosity (plug flow)ŸGlobulinsŸAlpha + Beta = transport fatŸGamma: related to immune systemŸFibrogen: help form blood clotsŸErythrocytes (RBC’s)ŸOxygen and carbon dioxide transportŸBiconcave discsŸUnique shape: including surface area for more oxygen transportŸAnucleated and no mitochondria (not a true cell)Ÿ100-120 daysŸLeukocytes (WBC’s)...
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3-26-07 - Ÿ-1Circulatory system ŸCardiovascular system...

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