Circulatory

System

CardiovascularsystemLymphaticsystem1PPT課件CirculatorySystemCardiovascu1Heart:

pumpArtery:

outputCapillary:

exchangeVein:inputCardiovascularsystem

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Epicardium(LM)Thewalloftheheart5PPT課件1.HeartEpicardium(LM)Thewa5 1.1Endocardiumendothelium:continuous

Subendothelium:DCT&SMCSubendocardiallayer:adeeperlayerCT,branchesOfimpulse-conductingsystem.locatedinthislayer.6PPT課件 1.1Endocardium6PPT課件6Endocardiumofcardiacwallendocardium

endothelium7PPT課件Endocardiumofcardiacwallend7Purkinjefiber8PPT課件Purkinjefiber8PPT課件8ThevalvesoftheheartstructureSurface:foldsofendocardiumCore:DCTFunctionsPreventretrograde.9PPT課件Thevalvesoftheheart9PPT課件9 1.2*MyocardiumCardiacmusclecells.

Atrialmyocardium:secretnatriuretichormone.Increaseexcretionofwater、sodium;dilatevessels&reducebloodpressure.10PPT課件 1.2*Myocardium10PPT課件10Cardiacmuscle11PPT課件11PPT課件11Intercalateddisc12PPT課件Intercalateddisc12PPT課件121.3EpicardiumPlasmamembrane：

mesothelium

LCTViscerallayerofpericardium.13PPT課件1.3Epicardium13PPT課件13(LM)Thewalloftheheart14PPT課件(LM)Thewalloftheheart14PP142.GeneralStructureof

Blood

Vessels

tunicaintima:

Endothelium：asinglelayerofsquamous

epithelialcellsbasallaminaSubendotheliallayer：LCT

Internalelasticmembrane

tunicamedia

:elastictissues/SM;EEMtunicaadventitia:

LCT

15PPT課件2.GeneralStructureof

Blood153.Arteries16PPT課件3.Arteries16PPT課件163.1largeartery

1.TunicaintimaEndothelialcells:rod-likeinclusions,(WPbodies)Weibel-Paladebodies.Subendotheliallayer：

relativethicker.Internalelasticmembrane:indistinct2.

TunicamediaFenestratedmembrane--40~70lamellaeofelastin.ElasticarterySMC&elasticfiber.Externalelasticmembrane:indistinct3.Tunicaadventitiarelativethinner,CT.17PPT課件3.1largeartery

1.Tunicain17largeartery

intimamediaadventitia18PPT課件largeartery

intimamediaadvent18largeartery

19PPT課件largeartery

19PPT課件193.2medium-sizedarteryIntima:Subendotheliallayer：

relativethinner.Internalelasticmembrane:distinctMedia:Smoothmusclecells--mostcircularlyoriented(10~40layers),musculararteryAdventitia:Thicknessissimilartomedia.Externalelasticmembrane

isdistinctinthejunction.

20PPT課件3.2medium-sizedarteryIntima:20medium-sizedartery21PPT課件medium-sizedartery21PPT課件2122PPT課件22PPT課件2223PPT課件23PPT課件2324PPT課件24PPT課件2425PPT課件25PPT課件2526PPT課件26PPT課件2627PPT課件27PPT課件273.3

smallartery&arteriolesmallartery:diameter0.3-1mm,

Internalelasticmembraneisdistinct，severallayersofcircularSMinmedia,noExternalelasticmembrane.Arteriole:

diameter<0.3mm，with1～2layersofcircularSM，adventitiaisthin.28PPT課件3.3smallartery&arterioles28smallartery&arterioleSmallarteryarteriole29PPT課件smallartery&arterioleSmall29Comparisonsbetweenlarge、medium&smallarteryWallsoflumenlargeAMediumASmallAintimaendotheliumW-P

bodySubendothelialthickthinthinIEMindistinctdistinctvisiblemediaSM10-403-10Elasticlamellae40-70adventitiaEEMindistinctdistinctinvisible30PPT課件Comparisonsbetweenlarge、Wall30Smallarteryarteriolediameter0.3-1mm<0.3mmEEMWell-definednoSMinmedia3-101-2adventitiathickthinComparisonsbetweensmallarteryandarteriole31PPT課件Smallarteryarteriolediameter0313.4Functionsofarteries:ElasticA:keepbloodstream

continuous.systole:dilatediastole:recoilMuscularA:contraction&relaxation.Regulatetheamountofbloodflowingintotheregions..SmallA&arterioles:modulatethelocalbloodsupply.32PPT課件3.4Functionsofarteries:Elas324capillaries4.1basicstructureofcapillary

Thewallisverythin.Diameter:6-8um.endotheliumBasallaminapericyte33PPT課件4capillaries4.1basicstruct33capillary34PPT課件capillary34PPT課件34capillary35PPT課件capillary35PPT課件3536PPT課件36PPT課件364.2continuouscapillary37PPT課件4.2continuouscapillary37PPT課374.3fenestratedcapillary38PPT課件4.3fenestratedcapillary38PPT38fenestratedcapillary39PPT課件fenestratedcapillary39PPT課件394.4sinusoid40PPT課件4.4sinusoid40PPT課件40ClassificationofcapillariescontinuousCap.FenestratedCap.sinusoidsEDPinocytoticvesiclesD:70nm,fenestrationsgapBMintegratedcontinuousabsentdistributionlung,CNS,thyroid,CT,muscleTgastrointestinal,filtratingbarrierEndocrinegland41PPT課件Classificationofcapillariesc415.microcirculationdefinition:arterioletovenule，basicunitforbloodcirculation.compositions：arteriole、metarteriole、thoroughfarechannel、capillarybed、arteriovenousshunt

&venule.threedifferentpaths：

arteriole

→metarteriole

→thoroughfarechannel

→venule

arteriole

→metarteriole

→capillarybed

→venule

arteriole

→arteriovenousshunt

→venule42PPT課件5.microcirculationdefinition:42microcirculation43PPT課件microcirculation43PPT課件436.vein44PPT課件6.vein44PPT課件44Thebasicstructureofveins

lumenislarger,irregular.

thewallisthin.

intima,media,adventitia,are

indistinct.

venousval