《神经传导路》PPT课件

《《神经传导路》PPT课件》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、NervousPathwayⅠ.TheSensory(Ascending)PathwaysⅠ)Thedeepsensory(ortheproprioceptive)pathways1.Theconsciousdeepsensorypathways1).ThedeepsensoryandfinetouchpathwaysoftrunkandlimbsThefirstneurons:spinalganglionThesecondneurons:gracileandcuneatenucleiThefirstneurons:ventroposteriorlateralnucleusDecussa

2、tionofmediallemniscusLesion:hemiplegiaReceptorsmusclestendonperiosteumandjointSpinalnerve（peripheralprocesses）SpinalgangliaThefirstneuronsDorsalroots(medialbundle)(Centralprocesses:fasciculuscuneatusandgracilis)GracileandcuneatenucleiThesecondneuronsthalamocorticaltractRunningthroughtheposteriorl

3、imboftheinternalcapsuleCortexofthecerebrumDecussationofmediallemniscusThethirdneuronsVentroposteriorlateralnucleusMediallemniscus,throughthemedullaoblongataponsandmidbrain2.TheunconsciousdeepsensorypathwayReceptorsmusclestendonperiosteumandjointSpinalnerve（peripheralprocesses）SpinalgangliaThefirs

4、tneuronsDorsalroots(Centralprocesses)ThoracicnucleusofC8-C12andlateralpartoflaminaⅤ-ⅦoflumbosacralenlargementThesecondneuronsTheanteriorandposteriorspinocerebellartractsBywayofthesuperiorandinferiorcerebellarpedunclesCortexofthecerebellumⅡ)Thesuperficialsensorypathways1.Thesuperficialsensorypathw

5、ayoftrunkandlimbs1).ThepathwayconcernedwithpainandthermalsensationsThefirstneurons:spinalganglionThesecondneurons:nucleuspropriusThefirstneurons:ventroposteriorlateralnucleusCrossthroughtheanteriorwhitecommissureReceptorsCutaneousexteroceptorofthetrunkandlimbsSpinalnerve（peripheralprocesses）Spina

6、lgangliaThefirstneuronsDorsalroots(lateralbundle)(Centralprocesses:dorsolateralfasciculus)NucleuspropriusThesecondneuronsthalamocorticaltractRunningthroughtheposteriorlimboftheinternalcapsuleCortexofthecerebrumCrossthroughtheanteriorwhitecommissureandformthelateralspinothalamicThethirdneuronsVent

7、roposteriorlateralnucleusRunupwardwithinoneortwosegments2).TherudetactileandpressuresensationpathwayTherouteisalmostsameasthepainandthermalpathwayexceptforalittledifference.２.ThesuperficialsensorypathwayofheadandfaceRe