神经传导路ppt【精品-ppt】

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1、Thenervouspathway神经传导路一、SensoryPathways感觉传导通路proprioceptiveandfinetouchpathwayoftrunkandlimbs躯干四肢本体觉和精细触觉传导路PrimaryNeuronCellbodiesarelocatedintheganglionofspinaln.transmitsensoryinputfromjoint,muscle,tendontotheposteriorfuniculusofthespinalcordformtheFasciculuscuneatusandFasciculusgracilis1

2、.proprioceptiveandfinetouchpathwayoftrunkandlimbsSecondaryNeuronCellbodiesarelocatedinNucleusgracilisandNucleuscuneatusSendoutfibersCrosstotheoppositebydecussationofmediallemniscusAscendsasmediallemniscusThirdNeuroncellbodisarelocatedinthethalamussendoutfiberstoformcentralthalamicradiationpr

3、ojecttothesomaticsensorycortex1.proprioceptiveandfinetouchpathwayoftrunkandlimbsIIIVPLnucleusFasciculusgracilisFasciculuscuneatusMediallemniscusIIINucleusgracilisNucleuscuneatusSpinalganglionDecussationofmediallemniscuscentralthalamicradiations1.proprioceptiveandfinetouchpathwayoftrunkandlim

4、bsmuscles,tendons,jointsandperiosteumPeripheralprocessesIipsilateralposteriorfuniculusofspinalcordIIGracilenucleuscuneatenucleusIIIsupeior2/3ofpostcentralgyrusandposteriorpartoftheparacentrallobule,PrecentralgyruscentralthalamicradiationsPosteriorlimbofinternalcapsuleSpinalganglionCentralpro

5、cessesDecussationofmediallemniscusmediallemniscusventralposterolateralnucleus(VPL)Fasciculuscuneatus(aboveT4)Fasciculusgracilis(belowT5)ReceptorforfinetouchinskinPain,temperatureandsimpletouchpathwayoftrunkandlimbs躯干四肢的痛温觉和粗略触觉传导通路spinalgangliaⅠ、Ⅳ、ⅦofposteriorhornspinothalamictractSpinallemn

6、iscusventralposterolateralnucleuscentralthalamicradiationsIIIIIIPrimaryNeuronCellbodiesarelocatedintheganglionofspinaln.RelaysensoryinputfromtheperipherytotheposteriorhornofthespinalcordSynapseswiththesecondaryneuronsintheposteriorhornofspinalcordPain,temperatureandsimpletouchpathwayoftrunka

7、ndlimbs躯干四肢的痛温觉和粗略触觉传导通路SecondaryNeuronlocatedintheⅠ、Ⅳ、ⅦofposteriorhornofspinalcordSendoutfiberscrosstotheoppositesidethroughtheanteriorwhitecommissuresandformthespinothalamictractThirdNeuronthethirdneuronslocatedinthethalamussendoutfiberstoformcen