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《1.10 Blood supply to the brain》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、1.10Bloodsupplytothebrain2015年2月16日6:46IntroductionThebrainreceivesitsarterialsupplyfromtwosources:theinternalcarotidarteriesandthevertebral/basilararteries(thetwovertebralarteriesjointoformthebasilararteryatthebaseofthepons).Boththeinternalcarotidarteriesandthevertebral/basilararterie
2、sgiverisetofourmainbranches,commonlyreferredtoastheanteriorcirculationandtheposteriorcirculation.Thetwosystemsofarteriesarejoinedatthejunctionbetweentheposteriorcommunicatingarteryandtheposteriorcerebralartery.Inmosthumans,theposteriorcerebralarteryreceivesitsbloodsupplyfromthevertebra
3、l/basilarsystem.Insomepeople,theposteriorcommunicatingarteryisquitelarge,andtheposteriorcerebralarterymaybeperfusedsignificantlybythecarotidartery.Generallyspeaking,theanteriorcirculationsuppliestheforebrain(thecerebralhemispheresandthediencephalon),andtheposteriorcirculationsuppliesth
4、ebrainstemandtheupperspinalcord.However,formostpeople,thearterialsupplytotheCNSisnotquitethatsimple.Asjustmentioned,theposteriorcerebralarterysuppliestheposteriorforebrain,includingsomedeepstructures,anditalsosuppliespartsofthemidbraininthebrainstem.Thus,asindicatedinthechart(bylisting
5、theposteriorcerebralarterytwice,onceineachgroup),theposteriorcerebralarterycontributestoboththeanteriorandposteriorcirculations.Asyoustudythistutorial,youshouldlearnthedistributionsofthese8arterieslistedinthischart.分區(qū)02.大腦科學(xué)的第1頁(yè)125431Internalcarotidarteries分區(qū)02.大腦科學(xué)的第2頁(yè)Vertebralarterie
6、s23Basilarartery:Fromponstowardsthemidbrain4Posteriorinferiorcerebellarartery分區(qū)02.大腦科學(xué)的第3頁(yè)5AnteriorinferiorcerebellararteriesSuperiorcerebellararteriesBranchesofposteriorcerebralartory分區(qū)02.大腦科學(xué)的第4頁(yè)P(yáng)osteriorcommunicatingarteries:ConnecttheposteriorcerebraltotheinternalcarotidartieriesAn
7、teriorcerebralarteries:OnthetopoftheopticchiasmAnteriorcommunicatingartery:ConnectrighandleftanteriorcerebralarteryAnteriorcerebralarteries分區(qū)02.大腦科學(xué)的第5頁(yè)Middlecerebralartery:Runthroughthelateralfissure,supplyingbloodtothesuperiorpartoftemporallobe,andthecentralpartsofparietalandfronta
