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Mizzou MPP 3202 - Chapter 16

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PowerPoint PresentationFigure 16.1a (1 of 2)Table 16.1 Functions of Plasma ProteinsFigure 16.1b (2 of 2)Cellular ElementsFigure 16.3Figure 16.8Figure 16.9Figure 16.10Figure 16.11a (1 of 2)© 2013 Pearson Education, Inc.BloodChapter 16Figure 16.1a (1 of 2)WaterIonsTrace elementsand vitaminsOrganicmoleculessuch asGasesiscomposedofAmino acidsProteinsGlucoseLipidsNitrogenouswasteFibrinogenGlobulinsAlbuminsCO2O2PlasmaBLOODsuch asTable 16.1 Functions of Plasma ProteinsFigure 16.1b (2 of 2)iscomposedofBLOODRed bloodcellsLymphocytesMonocytesNeutrophilsEosinophilsBasophils0PlateletsWhiteblood cellsincludeCellularelements51015mCellular Elements•Three main cellular elements –Red blood cells – also called erythrocytes– Platelets– White blood cells – also called leukocytes–Lymphocytes – also called immunocytes– Monocytes – develop into macrophages; known as phagocytes– Neutrophils – known as phagocytes and granulocytes– Eosinophils – also called granulocytes– Basophils – also called granulocytes; tissue basophils are called mast cells © 2013 Pearson Education, Inc.Figure 16.3This table lists the normal ranges of values.THE BLOOD COUNT<1%whitecellsHematocrit is the percentage of total blood volumethat is occupied by packed (centrifuged) red blood cells.The hemoglobin value reflects the oxygen-carryingcapacity of red blood cells. (*1 deciliter (dL)  100 mL)A machine counts erythrocytes as they streamthrough a beam of light.A total white cell count includes all types ofleukocytes but does not distinguish between them.The differential white cell count presents estimates ofthe relative proportions of the five types of leukocytesin a thin blood smear stained with biological dyes.NeutrophilsEosinophilsBasophilsLymphocytesMonocytes2–8%20–40%<1%1–4%50–70%4–11  1034.5–6.5  103150–450  103Platelet count is suggestive of the blood’s abilityto clot.14–1740–54%37–47%37–47%12–163.9–5.6  1034–11  1032–8%20–40%<1%1–4%50–70%150–450  103HematocritHemoglobin (g Hb/dL* whole blood)Red cell count (cells/L)Total white count (cells/L)Differential white cell countPlatelets (per L)MALES FEMALES58%plasmavolume42%packedred cellvolume100%Figure 16.8HEMOSTASIS AND TISSUE REPAIRVasoconstrictionCollagenexposedDamage towall ofblood vesselPlateletsadhere andreleaseplateletfactorsPlatelets aggregateinto loose plateletplugTemporaryhemostasisClot: reinforcedplatelet plugTissue factorexposedCell growth andtissue repairIntact bloodvessel wallClot dissolvesFibrin slowlydissolved byplasminConvertsfibrinogento fibrinThrombinformationCoagulationcascade(Fig. 16.10)Figure 16.9PLATELET PLUG FORMATIONPlatelets will not adhere to intact endothelium. Damage triggers platelet plug formationwhere collagen has been exposed.Lumen ofblood vesselPreventsplateletadhesionIntact endotheliumreleases prostacyclinand nitric oxide (NO).Smoothmuscle cellsCollagensubendotheliallayerExposed collagenin damaged bloodvessel wallECFExposed collagen bindsand activates platelets.Release of platelet factorsFactors attract more platelets.Platelets aggregate intoplatelet plug.Figure 16.10THE COAGULATION CASCADEInactive plasma proteins (white boxes) are converted into active enzyme in each step of the pathway.INTRINSIC PATHWAY EXTRINSIC PATHWAYDamage exposestissue factor (III)Tissue factor(III) andactive VIIActive XIIActive XIXIXIIIXActive IXXVIIICa2Ca2Ca2phospholipids (PL)COMMON PATHWAYpositive feedbackThrombinActive XCa2,V, PLXIIIActive XIIIFibrinCa2Cross-linked fibrinFibrinogenProthrombinpositive feedbackCollagen or otheractivatorsVIIFigure 16.11a (1 of 2)Conversion of fibrinogen into fibrin, and subsequent


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Mizzou MPP 3202 - Chapter 16

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