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ID:40553217
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页数:8页
时间:2019-08-04
《1.10 Blood supply to the brain》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
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.分区02.大脑科学的第1页125431Internalcarotidarteries分区02.大脑科学的第2页Vertebralarterie
6、s23Basilarartery:Fromponstowardsthemidbrain4Posteriorinferiorcerebellarartery分区02.大脑科学的第3页5AnteriorinferiorcerebellararteriesSuperiorcerebellararteriesBranchesofposteriorcerebralartory分区02.大脑科学的第4页Posteriorcommunicatingarteries:ConnecttheposteriorcerebraltotheinternalcarotidartieriesAn
7、teriorcerebralarteries:OnthetopoftheopticchiasmAnteriorcommunicatingartery:ConnectrighandleftanteriorcerebralarteryAnteriorcerebralarteries分区02.大脑科学的第5页Middlecerebralartery:Runthroughthelateralfissure,supplyingbloodtothesuperiorpartoftemporallobe,andthecentralpartsofparietalandfronta
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