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Dept.ofAnatomyZhouHongYingInternalstructuresofbrainstem
greymatterwhitematterreticularformationDept.ofAnatomyZhouHongYReviewtheexternalstructuresofbrainstem1.ImportantmarksPyramidsunderlying–pyramidal(corticospinaltract)Decussationofpyramids—Olive–withininferiorolivarynucleusGraciletubercle-fasciculusgracilisandnucleusCuneatetubercle–fasciculuscuneatusandnucleuscuneatusConvexofpon–transversepontinefiber---pontocerebellarfibers–middlecerebellarpeduncleFacialcolliculus–abducensnucleusandfibersoffacialnerve2.CNIII~XIIattachmenttobrainstemReviewtheexternalstructures2人体解剖学脑干Internalstructure课件3Developmentofspinalcord&brainstemDevelopmentofspinalcord&4DevelopmentofspinalcordDevelopmentofspinalcord5InternalstructuresinspinalcordInternalstructuresinspinal6Asecendingtracts:Fasciculusgracilis&cuneatusSpinothalamicDescendingtracts:CorticospinaltractIntersegmentaltractFasciculuspropriusCentralcanal
threenuleicolumnAnterior,posterior,andlateralorintermediolateralhornAsecendingtracts:threenulei7MotorColumn1.GSE
2.SVE
3.GVE
SensoryColumn4.GVA
5.SVA
6.GSA
7.SSA
SulucuslimitansSulucuslimitans8ComponentsofCranialNervesSulucuslimitansGeneralVisceralAfferent
SpecialVisceralAfferentComponentsofCranialNervesSu9InternalstructuresinbrainstemCentralcanal–expendtoformⅣventricle7nuleicolumn:SomaticsensorySomaticmotorGeneralvisceralmotorGeneralvisceralsensorySpecialvisceralsensorySpecialsomaticsensorySpecialvisceralmotorInternalstructuresinbrains10NucleiCNconnectedtocranialnervesNucleiCNconnectedtocranial11人体解剖学脑干Internalstructure课件12GreymatterNucleiCNconnectedtocranialnervesrelaynucleiofascending&descendingtract(NONcranialnuclei)-NucleusofascendinganddescendingtractatdifferentlevelofthebrainstemGreymatterNucleiCNconnected13Whitematterascending&descendingtractsFiberstakepartinreflexWhitematterascending&descen14Greymatter:CranialnervenucleisomaticmotornucleiOculomotornucleiTrochlearnucleiAbducensnucleiHypoglossalnucleiⅢ,Ⅳ,Ⅵ,Ⅻcranialnervenucleinearthemedianplane.Greymatter:Cranialnervenu15
SpecialvisceralmotornucleiTrigeminalmotornucleiFacialnucleiAccessoryspinalnucleiAmbiguusnucleiSpecialvisceralmotornuclei16GeneralvisceralmotornucleiAccessoryoculomotornucleiSuperior&inferiorsalivatorynucleiDorsalmotorvagusnucleiGeneralvisceralmotornucleiA17sensorynucleiofCNGeneral&specialvisceralsensorynuclei----SolitarynucleussensorynucleiofCNGeneral&18sensorynucleiofCNGeneralsomaticsensorynucleiTrigeminalnuclei:ChiefsensoryMesencephlicSpinal
sensorynucleiofCNGeneralso19Vestibularnucleifrommidponstorostralmedullajustliebeneaththevestibulararea.Cochlearnucleibetweentheponsandmedullajustliebeneaththelateralrecessofrhomboidfossa.SpecialsomaticsensorynucleiVestibularnucleifrommidpon20CranialnervenucleiandtheirCNCranialnervenucleiandtheir21CranialnervenucleiandtheirCNCranialnervenucleiandtheir22relaynucleiofascending&descendingtract(NONcranialnuclei)NucleusGracilis&NucleusCuneatusInferiorolivarynucleusPontinenucleusSuperior&inferiorcollicusnucleiRednucleusSubstantianigrarelaynucleiofascending&de23WhitematterascendingtractdescendingtractWhitematter24Mediallemniscusconveysgeneralsomaticimpulsesoftheproprioceptivewhicharemediatedbyreceptorsdevelopedinthemuscles,ligamentsandjointsMediallemniscusconveysgener251.Ascendingtracts
conveysgeneralsomaticimpulsesofexteroceptive(lighttouch,pain,pressure,heat,coldsense)fromtheoppositesideoftrunkandlimbsSpinothalamictract1.Ascendingtractsconveys26conveysimpulsesofexteroceptive(lighttouch,pain,pressure,andheat,coldsense)fromtheoppositesideoftrigeminalnucleusthattheperipheralprocessdistributetofaceandhead,whicharemediatedbyreceptorsdevelopedintheskin.Trigeminothalamictractconveysimpulsesofexterocept27conveysthehearing(specialsomatic)frombothsidesofcortiorgan.Laterallemniscusconveysthehearing(specials28DescendingtractsPyramidalsystem
⑴Corticospinaltract⑵Corticonucleartract
ExtrapyramidalsystemDescendingtractsPyramidalsys29CorticospinaltractThelargestnumberoffibers(nearly90%)crossanddescendintheposteriorpartofthelateralfuniculus,asthelateralcorticospinaltract.
uncrossedfibersintotheanteriorfuniculusofspinalcordiscalledtheanteriorcorticospinaltract.
CorticospinaltractThelargest30
conveysmotorimpulsesfrommotorareaofcortextotheirterminationmotornucleusofCN.CorticonucleartractCorticonucleartract31CorticonucleartractCorticonucleartract32totheirterminationmotornucleusofCNandanteriorhornofspinalcordmuchmorethanonetimerelay--synapses.Extrapyramidalsystemtotheirterminationmotornuc33MediallongitudinalfasciculusThemediallongitudinalfasciculusinterconnectstheoculomotor,trochlear,abducens,Edinger-Westphal,vestibular,reticularandspinalaccessorynuclei,coordinatingconjugateeyemovementsandassociatedmovementsoftheheadandneck.
Mediallongitudinalfasciculus34reticularformationconsistsoffibersandsmallgroupsofnucleusthemedullaandpons
medianzonecontainingnucleirapheparamedianreticularnuclei.Inthemedullaitprojectmainlytothecerebellum.amedialzoneregardedasan“effector”area,asmallerlateralzonereferredtoasthe“sensory”part,becauseitreceivescollateralsfromsecondarysensorypathwaysreticularformationconsistsof35人体解剖学脑干Internalstructure课件36
A.RapheNuclei
B.CentralNuclearGroupC.LateralNuclearGroupD.PrecerebellarReticularNucleiABCDReticularFormation
AReticularFormation37Importanttransversesectionofthebrainstem1.Decussationofthecorticospinaltracts2.Decussationofthemediallemniscus3.Transversesectionofthemedullathroughthemid-olivarylevel4.Transversesectionoftheponsthroughthefacialcolliculus&abducensnucleus.5.TransversesectionofthemidbrainthroughthesuperiorcollicusImportanttransversesection38Transversesectionatthelevelofthepyramidaldecussation
Transversesectionattheleve39TransversesectionatthelevelofthedecussationofthemediallemniscusTransversesectionattheleve40Transversesectionatthecaudalendofthefourthventricle
Transversesectionatthecaud41Transversesectionthroughthesuperiorhalfofthemedullaoblongataattheleveloftheinferiorolivarynucleus
Transversesectionthroughthe42TransversesectionthroughtheponsatthelevelofthefacialcolliculusTransversesectionthroughthe43ThecentralcourseofthefibresofthefacialnerveinatransversesectionThecentralcourseofthefibr44TransversesectionoftheponsatthelevelofthetrigeminalnerveTransversesectionofthepons45Transversesectionofthemidbrainattheleveloftheinferiorcolliculi
Transversesectionofthemidb46Transversesectionofthemidbrainatthelevelofthesuperiorcolliculi.Transversesectionofthemidb47TransversesectionoftheponsTransversesectionofthepons48Transversesectionoftheponsthroughthe
facialcolliculusTransversesectionofthepons49TransversesectionofthemidbrainthroughthesuperiorcollicusTransversesectionofthemidb50RoleofbrainstemThebrainstemisthebasicattention,inspiration,andconsciousnessofthebrain.
Itsendsalltheinformationfromthebraintothebody.
Thebrainstemcontrolsbreathing,heartrate,swallowing,controlofsweating,bloodpressure,digestion,temperature,alertnesslevel,hormonebalance,abilitytosleep,andthereflexesofsightandhearofaperson'sbody.
Thebrainstemisinchargeofallthefunctionsthatahumanbodyneedstostayalive.RoleofbrainstemThebra51Dept.ofAnatomyZhouHongYingInternalstructuresofbrainstem
greymatterwhitematterreticularformationDept.ofAnatomyZhouHongYReviewtheexternalstructuresofbrainstem1.ImportantmarksPyramidsunderlying–pyramidal(corticospinaltract)Decussationofpyramids—Olive–withininferiorolivarynucleusGraciletubercle-fasciculusgracilisandnucleusCuneatetubercle–fasciculuscuneatusandnucleuscuneatusConvexofpon–transversepontinefiber---pontocerebellarfibers–middlecerebellarpeduncleFacialcolliculus–abducensnucleusandfibersoffacialnerve2.CNIII~XIIattachmenttobrainstemReviewtheexternalstructures53人体解剖学脑干Internalstructure课件54Developmentofspinalcord&brainstemDevelopmentofspinalcord&55DevelopmentofspinalcordDevelopmentofspinalcord56InternalstructuresinspinalcordInternalstructuresinspinal57Asecendingtracts:Fasciculusgracilis&cuneatusSpinothalamicDescendingtracts:CorticospinaltractIntersegmentaltractFasciculuspropriusCentralcanal
threenuleicolumnAnterior,posterior,andlateralorintermediolateralhornAsecendingtracts:threenulei58MotorColumn1.GSE
2.SVE
3.GVE
SensoryColumn4.GVA
5.SVA
6.GSA
7.SSA
SulucuslimitansSulucuslimitans59ComponentsofCranialNervesSulucuslimitansGeneralVisceralAfferent
SpecialVisceralAfferentComponentsofCranialNervesSu60InternalstructuresinbrainstemCentralcanal–expendtoformⅣventricle7nuleicolumn:SomaticsensorySomaticmotorGeneralvisceralmotorGeneralvisceralsensorySpecialvisceralsensorySpecialsomaticsensorySpecialvisceralmotorInternalstructuresinbrains61NucleiCNconnectedtocranialnervesNucleiCNconnectedtocranial62人体解剖学脑干Internalstructure课件63GreymatterNucleiCNconnectedtocranialnervesrelaynucleiofascending&descendingtract(NONcranialnuclei)-NucleusofascendinganddescendingtractatdifferentlevelofthebrainstemGreymatterNucleiCNconnected64Whitematterascending&descendingtractsFiberstakepartinreflexWhitematterascending&descen65Greymatter:CranialnervenucleisomaticmotornucleiOculomotornucleiTrochlearnucleiAbducensnucleiHypoglossalnucleiⅢ,Ⅳ,Ⅵ,Ⅻcranialnervenucleinearthemedianplane.Greymatter:Cranialnervenu66
SpecialvisceralmotornucleiTrigeminalmotornucleiFacialnucleiAccessoryspinalnucleiAmbiguusnucleiSpecialvisceralmotornuclei67GeneralvisceralmotornucleiAccessoryoculomotornucleiSuperior&inferiorsalivatorynucleiDorsalmotorvagusnucleiGeneralvisceralmotornucleiA68sensorynucleiofCNGeneral&specialvisceralsensorynuclei----SolitarynucleussensorynucleiofCNGeneral&69sensorynucleiofCNGeneralsomaticsensorynucleiTrigeminalnuclei:ChiefsensoryMesencephlicSpinal
sensorynucleiofCNGeneralso70Vestibularnucleifrommidponstorostralmedullajustliebeneaththevestibulararea.Cochlearnucleibetweentheponsandmedullajustliebeneaththelateralrecessofrhomboidfossa.SpecialsomaticsensorynucleiVestibularnucleifrommidpon71CranialnervenucleiandtheirCNCranialnervenucleiandtheir72CranialnervenucleiandtheirCNCranialnervenucleiandtheir73relaynucleiofascending&descendingtract(NONcranialnuclei)NucleusGracilis&NucleusCuneatusInferiorolivarynucleusPontinenucleusSuperior&inferiorcollicusnucleiRednucleusSubstantianigrarelaynucleiofascending&de74WhitematterascendingtractdescendingtractWhitematter75Mediallemniscusconveysgeneralsomaticimpulsesoftheproprioceptivewhicharemediatedbyreceptorsdevelopedinthemuscles,ligamentsandjointsMediallemniscusconveysgener761.Ascendingtracts
conveysgeneralsomaticimpulsesofexteroceptive(lighttouch,pain,pressure,heat,coldsense)fromtheoppositesideoftrunkandlimbsSpinothalamictract1.Ascendingtractsconveys77conveysimpulsesofexteroceptive(lighttouch,pain,pressure,andheat,coldsense)fromtheoppositesideoftrigeminalnucleusthattheperipheralprocessdistributetofaceandhead,whicharemediatedbyreceptorsdevelopedintheskin.Trigeminothalamictractconveysimpulsesofexterocept78conveysthehearing(specialsomatic)frombothsidesofcortiorgan.Laterallemniscusconveysthehearing(specials79DescendingtractsPyramidalsystem
⑴Corticospinaltract⑵Corticonucleartract
ExtrapyramidalsystemDescendingtractsPyramidalsys80CorticospinaltractThelargestnumberoffibers(nearly90%)crossanddescendintheposteriorpartofthelateralfuniculus,asthelateralcorticospinaltract.
uncrossedfibersintotheanteriorfuniculusofspinalcordiscalledtheanteriorcorticospinaltract.
CorticospinaltractThelargest81
conveysmotorimpulsesfrommotorareaofcortextotheirterminationmotornucleusofCN.CorticonucleartractCorticonucleartract82CorticonucleartractCorticonucleartract83totheirterminationmotornucleusofCNandanteriorhornofspinalcordmuchmorethanonetimerelay--synapses.Extrapyramidalsystemtotheirterminationmotornuc84MediallongitudinalfasciculusThemediallongitudinalfasciculusinterconnectstheoculomotor,trochlear,abducens,Edinger-Westphal,vestibular,reticularandspinalaccessorynuclei,coordinatingconjugateeyemovementsandassociatedmovementsoftheheadandneck.
Mediallongitudinalfasciculus85reticularformationconsistsoffibersandsmallgroupsofnucleusthemedullaandpons
medianzonecontainingnucleirapheparamedianreticularnuclei.Inthemedullaitprojectmainlytothecerebellum.amedialzoneregardedasan“effector”area,asmallerlateralzonereferredtoasthe“sensory”part,becauseitreceivescollateralsfromsecondarysensorypathwaysreticularformationconsistsof86人体解剖学脑干Internalstructure课件87
A.RapheNuclei
B.CentralNuclearGroupC.LateralNuclearGroupD.PrecerebellarReticularNucleiABCDReticularFormation
AReticularFormation88Importanttransversesectionofthebrainstem1.Decussationofthecorticospinaltracts2.Decussationofthemediallemniscus3.Transversesectionofthemedullathroughthemid-olivarylevel4.Transversesectionoftheponsthroughthefacialcolliculus&abducensnucleus.5.TransversesectionofthemidbrainthroughthesuperiorcollicusImportanttransversesection89Transversesectionatthelevelofthepyramidaldecussation
Transversesectionattheleve90Transv
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