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ID:1510555
大小:756.50 KB
页数:38页
时间:2017-11-12
《白细胞和免疫系统》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、Blood,LymphandImmuneSystemsChapter10Bloodhem/oandhemat/oplasma-55%formedelements-45%serum-plasmawithoutclottingproteinsBloodCellsRBC-erythrocytes-erythropoiesisWBC-leukocytes-leukopoiesisPlatelets-thrombocytes-thrombopoiesisErythrocyteserythr/o-redcyt
2、e-cellHemoglobin-bloodproteintransportsoxygenReticulocyte-immatureerythrocyteRBCsproducedbyredbonemarrowLeukocytesleuk/o-whiteProtectthebodyagainstinvasionPassthroughcapillarywallsGranulocytesneutrophils(phagocytosis)eosinophils(allergies)basophils(pr
3、omoteinflammation)Agranulocyteslymphocytes(productionofcirculatingantibodies)monocytes(macrophages)Collectionofdeadandlivingbacteriaandleukocytescalledpus,abscess.ThrombocytessmallestformedelementmadeinbonemarrowessentialtobloodcoagulationIfinjury,blo
4、odcomesincontactwithanytissueotherthantheliningofthevessels,plateletssticktogether,formplug,sealswound.Chemicalsreleased,seriesofreactions,formationofclot.Plasmaplasma92%water8%plasmaproteinsalbuminglobulinfibrinogenserum-plasmawithoutclottingproteins
5、orfibrinogenFunctionsoftheImmuneSystemToprotecttheentirebodyfromavarietyofharmfulsubstancespathogenicmicroorganismsallergenstoxinsmalignantcellsStructuresoftheImmuneSystemUnlikeotherbodysystems,ImmuneSystemisNOTcontainedwithinasinglesetoforgansorvesse
6、lsActiondependsonstructuresfromlymphatic,cardiovascular,andIntegumentarysystemsWorksprimarilythroughantigen-antibodyreactionLymphaticSystemMajorstructureslymphvesselslymphnodeslymphfluidtonsilsAlsospleenthymusFunctionsoftheLymphSystemlymph/odrainfluid
7、fromtissuespacesandreturntoittothebloodtransportmaterials(nutrients,hormonesandoxygen)tobodycellscarryawaywasteproductstothebloodtransportlipidsawayfromdigestivesystemcontrolofinfectionLymphSystemLymphoriginatesinbloodplasmaInterstitialfluidcleansandn
8、ourishesbodytissuescollectscellulardebris,bacteriareturntobloodorlymphcapillariesLymphNodeslocatedinlymphvesselssmallroundorovalstructures(filters)depositoriesforcellulardebrisbacteriaanddebrisphagocytizedLymphNodesinsidearemassesoftissuewhich
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