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ID:37487055
大小:8.87 MB
页数:166页
时间:2019-05-24
《周围神经松动术蔡永裕》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、Neuronsarethestructuralunitsofnervoustissue.CONTINUUMEssentiallytheentirenervoussystemisacontinuousstructureMechanically:Chemically:Electrically:PERIPHERALNEURODYNAMICS(PHYSICALHEALTHOFNERVOUSSYSTEM)蔡永裕,MS,PT美國西北大學物理治療研究所碩士臺灣台中澄清醫院復健治療部主任、臺灣大學醫學院物理治療臨床專家陽明大學兼任講師弘光科
2、技大學助理教授物理治療學會繼續教育主任委員前美國芝加哥ResurrectionMedicalCenter臨床專家前物理治療師公會全國聯合會理事長PERIPHERALNERVESPeripheralnervesusuallydon„tcontainnervecellbodies,dendritesorsynapses.Variations:PERIPHERALNERVEThestructuralorganizationofperipheralnervesallowsaxonstoconductimpulsesthatfacilit
3、ateanindividual‟sinteractionswiththeworldwhiledirectingandtoleratingthemyriadposturesofthetrunk,head,andlimbs.PERIPHERALNERVOUSSYSTEMPeripheralnerveshavethreecomponents:Axons(non-myelinatedandmyelinated)+Schwanncells(supportingcellsaroundtheaxons)Connectivetissues(wi
4、thbloodvessels)MechanicalInterfaceDIFFERENTCHARACTERISTICSOFAXONSnon-myelinatedaxons:veryslender,about0.2to1.5micrometresindiameter(0.3to1.6m/s).myelinatedaxons:1to20micrometresindiameter(3to100m/s).DIFFERENTAXONSCONNECTIVETISSUEOFPERIPHERALNERVEaxonsareinsulatedfro
5、meachother,bundledtogether,andprotectedby3connectivetissuelayers—theendoneurium,theperineurium,andtheepineurium.CONNECTIVETISSUESNeurovascularbundle(NV)Interfascicularepineurium(Ep)Perineurium(Pe)Endoneurium(En)Alargedepositionofendoneurialcollagen(*)ENDONEURIUMva
6、scularlooseconnectivetissuethatsurroundsindividualSchwanncellsheaths,andtheirenclosedaxons,withinafascicle.PERINEURIUMBundlesofaxonsaregroupedintofasciclesbyadenseconnectivetissuecalledperineuriumformedby(upto15layersofflatperineurialcells.)Themostinternalperineurialc
7、ellsformaperineurialdiffusionbarrierthatfunctionswiththeblood-nervebarrierincontrollingtheendoneurialenvironment.Theselayersofcollagenandperineurialcellsmaketheperineuriumtheprimaryloadbearingportionofthenerve.EPINEURIUMNervefasciclesareheldtogetherandsurroundedbyacon
8、nectivetissuelayer,termedtheepineurium.Theepineurialconnectivetissueinnervesthatcontainmanyfascicles,andtheco
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