Forebrain

diencephalon

telencephalon

Midbrain

HindbrainDiencephalonEpithalamus

Dorsalthalamus

Ventralorsubthalamus

Hypothalamus

Metathalumus?posteriorpole->pulvinarThebrachiumofthesuperiorcolliculus?medialgeniculatebody?lateralgeniculatebodySuperiorsurface

?striaterminalis

thalamostriatevein

bodyofthecaudatenuclei

?externalmedullarylamina

thalamus—reticularnucleus

?posteriorlimboftheinternalcapsule

medialsurface

?interthalamicadhesion,1cm

?hypothalamicsulcusStructureofthethalamusInternalmedullarylamina

VerticalY-shapedsheet?anteriornuclei?medialnucleidorsalandventral?lateralnuclei?ventralnuclei

?medialgeniculatebody,

lateralgeniculatebody

?intralaminarnuclei

?midlinenuclei

?reticularnuclieMedialnuclei

mediodorsalnucleus

piriformandadjacentcortex

amygdala,pallidum

medialnuclei

anteriorandmedialprefrontalcortex

olfactoryinputVentralanteriornucleus

substantianigra~frontalcortex

Ventrallateralnucleus

globuspallidus

premotorcortex

cerebellarnuclei

spinothalamictract

vestibularnuclei

?ventralposteriormedialnucleus

trigeminalpathway

postcentralgyrusMedialgenuculatebodySuperiorquadrigeminalbrachiumSpiralganglioncochlearnerveCochlearnucleiTrapezoidbodysuperiorolivarynuclei->laterallemniscus

->inferiorcolliculus

->inferiorquadigeminalbrachium

->medialgeniculatebody

->transverssuperiortemporalgyrus

Lateralgenuculatenucleus

nasalhalfofeachretinaopticnerve(I)

opticchiasmacontralateraloptictract

temporalhalfofeachretinaopitcnerve(I)

opticchiasmaipsilateraloptictract

->superiorcolliculus

->superiorquadrigeminalbrachiumlateralgeniculatenucleus,

superiorcolliculus,pretectalarea

posteriorlimbofinternalcapsule

opticradiation

occipitalcortex

inthebanksofthecalcarinesulcus

(area17)Opticchiasm

tubercinereum

tuberaleminence

infundibularstalk

mamillarybodies

posteriorperforatedsubstance

Divisionandnuclei

?chiasmatic(supraotic)region

?tuberalregion

?posterior(mammillary)region

?periventricularzone

?intermediate(medial)zone

?lateralzoneConnetionsofthehypothalamus

?visceralandsomaticsensorysystems

?visualandolfactorysensorysystems

?brainstem,thalamus,limbicstructure

andneocortex

neuroendocrineconnetionsofthehypo-thalamuswiththepituitarygland

Functionsofthehypothalamus

biologicalrhythme

sleep-wakecycle

regulationofplasmaosmoticpressure

temperatureregulation

regulationofthecardiovascularsystem

regulationoffoodintakeandmetabolism

reproduction

responsetostressSurfacesofthecerebrumSuperolateralsurfaceMedialsurfaceInferiorsurfaceSuperomedialborderInferolateralborderMedialoccipitalborderMedialorbitalborderFrontalpoleOccipitalpolePreoccipitalincisureTemporalpoleGyriorconvolutions(2200cm2)SulciorfissureLongitudinalcerebralfissureSuperolateralcerebralsurfaceLateralsulcus(Stem,Ant.Post.Asc.Ramus)

conductsthemiddlecerebralvesselsCentralsulcus(70o,2cm)FrontallobecentralsulcussuperomedialborderlateralsulcusParsobitalisParstriagularisParsopercularisTemporallobeLateralsulcusPreoccipitalincisure,parietooccipitalsulcusSuperiortemporalsulcusInferiortemporalsulcusSuperiortemporalgyrusauditory(area22)2.Middletemporalgyrus3.Inferiortemporalgyrus4.Transverstemporalgyrus(area41,42)(circularsulcus)ParietallobeCentralsulcusPreoccipitalincisure,parieto-occipitalsulcusLateralsulcusPostcentralsulcusareas3,1,2IntraparietalsulcusPostcentralgyrus(areas3,1,2)PosteriorareaSuperiorparietalgyrusIntraparietalsulcusInferiorparietalgyrusSupramarginalgyrusAngulargyrus(area39,visual)OccipitallobePreoccipitalincisure,parieto-occipitalsulcusTransverseoccipitalsulcusLateraloccipitalsulcusSuperioroccipitalgyrusInferioroccipitalgyrusInsulaDeepinthefloorofthelateralsulcusCircularsulcusOperculaoftheinsula(frontal,parietal,temporal)LimeninsulaeShortgyriLonggyrigustationMedialcerebralsurfaceCorpuscallosumrostrumgenutrunkspleniumCingulatesulcusMedialfrontalgyrusParacentralgyrus(areas4,3,1,2)CingulategyrusParieto-occipitalsulcusCalcarinesulcus(area17)CuneategyrusInferiorcerebralsurfaceOrbitalregionolfactorysulcusgyrusrectus“H”sulcusanteriorobitalgyrusmedialobitalgyrusposteriorobitalgyruslateralobitalgyrusCollateralsulcusOccipitotemporalsulcusLingualgyrusParahipocampalgyrusUncus

(olfactoryarea)MedialoccipitotemporalgyrusLateraloccipitotemporalgyrusLimbiclobeSubcallosalgyrusCingulategyrusParahippocampalgyrusHippocampusDentategyruVisceralbrainLimbicsystemLimbiclobeAssociatedsubcorticalnucleiAmygdalaSeptumareaHypothalamusHabenulaAnteriorthalamicnucleiHippocampalformationDentategyrusHippocampusproper

(cornusammonis,Ammon’shorn)CA1,CA2,CA3Stratumoriens(始層）Stratumpyramidalis（錐體細(xì)胞層）Stratumlucidum（透明層）Stratumradiatum（輻射層）Stratumlacunsum-moleculare（腔隙分子層）Papezclosedcircuit

parahippocampushippocampalformation

mammillarybody–anteriorthalamusN.

cingulategyri–parahippocampus

emotion,learn,memorizeCerebralcortexMolecularlayerExternalgranularlayerExternalPyramidallayerInternalgranularlayerGanglioniclayer(internalpyramidallayer)6.MultiformlayerThemaincorticalareaParietallobePrimarysomatosensorycortex(SI)(Area3,1,2)postcentralgyrusPosteriorparacentralgyrusSecondarysomatosensorycortex(SII)InferiorpostcentralgyrusVisualspeecharea->angulargyrus(area39)Secondaryspeecharea(Wernickearea)OccipitallobePrimaryvisualcortex(area17)UpperandlowerofCalcarinesulcusCuneategyrusandlingualgyrusTemporallobePrimaryauditorycortex(area41)Secondaryauditorycortex(area42)TransversetemporalgyrusAuditoryspeecharea(area22)SuperiortemporalgyrusFrontallobePrimarymotorcortex(MI)area(4,6)PrecentralmotorgyrusPremotorgyrusMotorspeecharea(area44,45)Inferiorfrontallobe(Broca’sgyrus)Writingarea(area8)MiddlefrontallobeBasalnucleiCorpusstriatumClautrumAmygdaloidcomplex1.CorpusstriatumLentiformnucleiGlobuspallidus(pallidum)putamenCaudatenucleiDorsaldivisionVentraldivisionCaudatenucleiHeadBodytailClautrumExternalcapsuleLentiformnucleiDistortedtetrahedralprismExternalmedullarylaminaInternalmedullarylaminaLateralandmedialsegmentsArterialbloodsupplyLenticulostriatevessleCerebralhaemorrhageRootofmiddle&anteriorcerebralarteriesAnteriorlimbMuchofposteriorlimbAmygdaloidcomplexNervefasciclesofthecerebrumAssociation(arcuate)fibresProjectionfibresCommissuralfibresAssociation(arcuate)fibresConfinedtoonehemisphereandallipsilateralShortarcuatefibresLongarcuatefibresLongarcuatefibresUncinatefasicuclusCingulumSuperiorlongitudinalfasiculusInferiorlongitudinalfasiculusProjectionfibresCorticofugalandcorticopetalCoronaradiataInternalcapsulAnteriorlimbGenuPosteriorlimbRetrolentiformsublentiformAnteriorlimbFrontopontineThalamocorticalfibresGenuCorticonuclerafibresPosteriorlimb

CorticospinaltractCorticorubralfibresThalamocorticalfibresRetrolentiformpartParietopontineOccipitopontinePosteriorthalamicradiationOpticradiationSublentiformpartTemporopontineAcousticradiationCorpuscallosumRostrum(frontalforceps)GenuTrunkSplenium(occipitalforceps)AnteriorcommissureHippocampalcommissureSupraopticdecussation==============================================IOlfactory IIOptic IIIoculomotorI嗅 II視 III動(dòng)眼---------------------------------------------------------------------------------IVTrochlear VTrigeminal VIAdbucensIV滑 V叉 VI外展---------------------------------------------------------------------------------VIIFacialVIIIVestibulocochlear

IXGlossopharyngeal

VII面 VIII聽(tīng)I(yíng)X舌咽---------------------------------------------------------------------------------XVagus XIAccessory XIIHypoglossal

迷、 副、 舌下神經(jīng)全==============================================================CranialnerveThemotorfibresCorticonuclearfibresBilateral:ThemotornucleiofthetrigemialTheFacial(upperfacialmuscles)nucleusThenucleusambiguusThespinalaccessorynucleusTheoculomotorThetrochlearTheabducensnucleiContralateral:Thefacial(lowerfacialmuscles)N.ThehypoglossalTheaccessory(thetrapeziusmotorN.)ThesensoryfibresGanglionPeripheralsensoryorgansEye,noseandearNucleiofterminationIOlfactorynervesOlfactorycell

Olfactorymucosa Superiornasalconcha TheoppositepartofthenasalseptumPlexiformnetworkAbout20branchesTraversethecribriformplateDuramater&pia-arachnoid->nasalperiosteumNasalmucosatissuespace->subarachnoidspaceOlfactorybulbOlfactorytractPrimaryolfactorycorticalarea:Anteriorolfactorynucleus,AmygdalaPiriform,entorhinalcortexAnosmiaCerebrospinalrhinorrhoeaIIOpticnerveRetinalganglionicneuronsOpticdiscOpticnerve(4cmlong,1,200,000axon)92%1micro(25m/sec),other2-10micro(60m/sec)OpticcanalOpticchiasmaIntraocular,orbital,intrcanalicular,intracranialpartEffectsfibresIIIOculomotornerveOculomotornucleusAccessorynucleusOculomotornerveinterpeduncularfossa(6-15rootlets)PiercescavernoussinusReceivesinternalcarotidsympatheticplexusOphthalmicdivisionofthetrigeminalSuperiororbitalfissure

Superiorramus->Rectussuperior,LevatorpalpebraesuperiorInferiorramus->Rectusmedialis;2.Rectusinferior;3.obliquusinferior->Preganglionicfibres->Ciliaryganglion->Shortciliarynerves->Sphincterpupillae,ciliarisCiliaryganglionSmall,flatreddish-gray(1-2mm)BetweentheopticnerveandtherectuslateralisPeripheralparasympatheticganglionSympatheticroot

InternalcarotidplexusPassthroughtheganglionBloodvesselsoftheeyeballDilatorpupillae2.SensoryrootRamuscommunicansofthenasociliarynerve(ophthalmicdivisionoftrigeminal)ReceiveseyeballsensationPassthrouththeciliaryganglion3.Shortciliarynervesroot

AccessoryoculomotorPreganglionicfibresSynapseintheciliaryganglionShortciliarynerveSphincterpupilaeciliarisIVtrochlearnerveTrochlearnucleusPassinglaterallythrouththetegmentCurvingdorsallyroundtheaqueductIntotheanteriormedullaryvelumDecussationRoundthecerebralpedunclePassesforwardsinthelateralwallofthecavernoussinusSuperiororbitalfissureOrbitSuperiorobliquemuscleVTrigeminalnerve1.Trigeminalmotornucleus(motor)7,7002.Principalsensorynucleus(touch)(Pontinetrigeminalnucleus)3.Spinaltrigeminalnucleus(pain,temp.)

sensoryroot(170,000)1.Sensoryroot(large)Trigeminal(semilunar)ganglionneartheapexofthepetrousTemporalbone->pons2.Motorroot(small)Sensoryfibre->crossthemidline

->ascendinthetrigeminallemniscus

->contralateralthalamicnucleus

ventralisposteriormedialis

->corticalpostcentralgyrus(area3,1,2)Ophthalmicnerve26,000Maxillary50,000Mandibular78,0001.Scalp,theteeth,theoralandnasalcavities,theduramater.2.Masticatorymuscles,anteriorbellyofdigastic,mylohyoidOphthalmicnerve(sensory)AnteromedialendtrigeminalganglionPassingforwardscavernoussinusSuperiororbitalfissureJustbeforeenteringorbitLacrimalnerveFrontalnerveNasociliarynerveJoinfrominternalcarotidsympatheticplexusandoculomotor,trochlearabducentnervesEyeball,lacrimalgland,conjunctiva,partofnasalmucosa,skinofthenose,EyelidsForeheadandpartofthescalpLacrimalnerveSmallestbranchesThroughthelateralpartofsuperiororbitalfissureRunswiththelacrimalarteryReceivingatwigfromthezygomaticotemporalbranch(V2)lacrimalsecretionnerve(fromfacial)FrontalnerveThelargestbranchSuperiororbitalfissureProccedsbetweenthelavatorpalpebraesuperiorisandtheperiosteumSupratrochlearnerve(supraorbitalforamen)Skinoftheuppereyelid,conjunctivaSupraorbitalnerveSkinoftheforehead,theuppereyelid,conjunctivaMucosaofthefrontalsinus,pericranium3.FrontalbranchNasociliarynerveCrossestheopticnerveBelowtherectussuperior1.Anteriorethmoidalnerve2.PosteriorethmoidalnerveEthmoidalandsphenoidalsinuses3.InfratrochlearnerveEyelids,conjunctiva,lacrimalsac,skinofthenose4.Longciliarynervesrunwithshortciliarynerve5.connectsciliaryganglionCiliarybody,iris,corneaMaxillarynerve(sensory)PassesthecavernoussinusTraverseforamenrotundumIntopterygopalatinefossaPassthroughthepterygopalatineganglionProcessoftheinferiororbitalfissureBranchesofthemaxillarynerveInthecranialcavity1MeningealInthepterygopalatinefossa2Ganglionic

3Zygomatic 1Posteriorsuperior alveolarIntheinfraorbitalcanal 2Middlesuperior alveolar 3Anteriorsuperior alveolarOntheface 1Palpebral 2Nasal 3SuperiorlabialMeningealnerveDuramaterinthemiddlecranialfossaTwoganglionicbranches->pterygopalatineganglion->lacrimalsecretion,mucosaofthenose,palateandpharynxsensory1ZygomaticotemporalnerveParasympatheticpostganglionicfibresfromthepterygopalatinegangliontothelacrimalgland(facialnerve,greaterpetrosalnerve)2ZygomaticofacialnerveTempleandzygomaticskinZygomaticnerveSuperioralveolar(dental)nervesPosterior

InfraorbitalnerveInfraorbitalcanal,foramenMiddleAnteriorMolarteeth,premolarteeth,incisor,canineMucosaofthemaxillarysinusUppergumLowereyelids,upperlip,cheek,nasalalaPterygopalatineganglionDeeplyinthepterygopalatinefossaConnectedfunctionallywiththefacialnerveMotor(parasympathetic)rootSympatheticrootSensoryroot

Parasympatheticroot

salivarynucleus->facialneve->GreaterpetrosalbranchDeeppetrosalnerveNerveofthepterygoidcanal(preganglionic)Zygomaticbranch(Max.N)

(postganglionic)Zygomaticotemporalnerve

Lacrimalnerve(Ophth.N)lacrimalgangland(secret)SympatheticrootThenerveofthepterygoidcanalPostganglionicfibresSuperiorcervicalganglion

Sensoryroot

pterygopalatinenerve(MaxN.)OrbitalbranchPalatinenerveNasalbranchePharyngealnervePalatinenerveGreaterpalatinenerveGreaterpalatinecanalThegums,mucosaandglandsofthepalatineInferiornasalconcha,middleandinferiormeatusesLesserpalatinenerveUvula,tonsilandsoftpalateLargesttrigeminaldivisionTrigeminalganglionTheforamenovaleDeeplylateralpterygoidmuscleAnteriortrunk(small)Posteriortrunk(large)MandibularnerveMeningealbranchDuramaterinthemiddlecranialfossaPartoftheanteriorfossaNerveofthemedialpterygoid(motor)PassthroughoticganglionTensortympani,tensorvelipalatineAnteriortrunk1.Buccalnerve

(sensory)Skinoverthebuccinatorbuccalmucousmembrance2.Massetericnerve(motor)Masseter,temporomandibularjoint3.Deeptemporalnerve(motor)Muscleofthetemporalis4.Nerveofthelateralpterygoid(motor)PosteriortrunkAuriculotemporalnerveLingualneverInferioralveolar(dental)nerve1.AuriculotemporalnerveTworootsencirculingthemiddlemeningealarteryUnderthelateralpterygoidBehindthetemporomandibularjointSuperficialtemporalvesselsSkinoftemporalregionandparotidglandOticganglionParasympatheticroot

PreganglionicfibresTympanicbranchofGlosso-pharyngealnerveviathelesserpetrosalnervePostganglionicfibresAuriculotemporalnerve->parotidglandSympatheticrootmeningealmiddlearteryplexusMotorrootmeningealbranch

Tensortympani,tensorvelipalatineSensoryrootparotidbranch2.LingualnerveRunsbetweentensorvelipalatiniandlateralpterygoidJoinedbychordatympanibranchofthefacialnerveSurfaceofmedialpterygoidMedialsurfaceofthemandibularramusmucosaofthepresulcalpartofthetongueMucosaofthefloorofthemouth,Lingualgingivae,Mucosaoftheanteriortwo-thirds(presulcalpart)ofthetongueSubmandibularglandandsublingualgland(glossopharyngealnerve)3.Inferioralveolar(dental)nerveDescendsmedialtothelateralpterygoidMandibularforamenMandibularcanalplexiformMentalforamenMentalnerveLowerlipandchinMylohyoidbranch(beforeenteringthemandibularcanal)Mylohyoid,anteriorbellyofdigastricTrigeminalneuralgiaEnigmatic,paroxysmalpainTeethandgumsofthemandible,Skininthetemporalregion,partoftheauricle(Externalmeatusandtympanum),Thelowlip,thelowerpartoftheface,Mucosaoftheanteriortwo-thirds(presulcalpart)ofthetongueThemucosaoftheflooroftheoralcavityMuscleofthemasticationVIAbducentnerveAbducentnucleusBeneaththefacialiscolliculusIntheventrolateralsulcusThemediallongutudinalfasciculus,connetingittooculomotorand

trochlearnucleiandtothevestibularnucleiCourseventrally,laterallyandcaudallyPassingthroughthepontinetegmentToemergeatthecaudalborderoftheponsThroughthecisternapontisalongtheclivusPiercestheduramaterMedialtothetrigeminalnerveFibro-osseouscanalTraversesthecavernoussinusMedialendofthesuperiororbitalfissureWithintheannulusofZinnOrbitBetweenthesuperiorandinferiordivisionoftheoculomotornerve

theLateralrectusVIIFacialnerveMotornucleusFacialnucleusTegmentalponsuppper,lowerpartSuperiorsalivatory(visceralefferent)ChordatympaniSalivaryglandMotorrootSensorynucleusRostralendofthenucleussolitariusMedullaoblongataGustatory2.TribeminalspinalnucleusSensoryroot(nervusintermedius)GenicularganglionBetweenmotorrootandvestibulocochlearnerveMotorroot,sensoryroot,VIIIN.IntheventrolateralsulcusCerebellopontineangleInternalacousticmeatusPiercesarachnoidandduramaterEnterfacialcanalThelabyrinthinesegmentGeniculumseg.GenicularganglionTympanicorhorizontalseg.Mastoidseg.StylomastoidforamenPierceparotidglandGreaterpetrosalnerveGenicularganglionTaste(palatalmucosa)PreganglionicparasympatheticfibresPterygopalatineganglionZygomaticotemporalnerveLacrimalnerveLacrimalglandNasalandpalatinenerveNasal,palatinemucosa3.DeeppetrosalnerveInternalcarotidsympatheticplexusNerveofthepterygoidcanalPterygpalatineganglionLesserpetrosalnerveOticganglionFromthevagalauricularbranchBranchesofdistributionInthefacialcanal Nerveofstapedius ChordatympaniAtexitfromstylomastoid Posteriorauricularforamen Digastric,posteriorbelly StylohyoidOntheface Temporal Zygomatic Buccal Marginalmandibular CervicalNerveofthestapedius2.Chordatympani5mmabovethestylomastoidforamenPerforatethepost.WallofthetympaniccavityCrossesovertheincusandmalleusPasseddeeptothelateralpterygoidInferiortemporalfossa

Jionthelingualnerve(mandibularnerve)1.Anteriortwo-thirdsofthetongue(most)Taste(exceptvallaePapillae)2.PreganglionicParasympatheitcfibre-submandibularganglionPostganglionicfibre-submandibularandsublingualglands3.PosteriorauricularnerveAuricularisposterior,Occipitalbellyofoccipitofrontalis4.DigastricbranchPosteriorbellyofdigastric5.StylohyoidbranchStylohyoidmusclePiercesparotidglandFormaparotidplexusFrontalbranchFrontalmuscle,orbicularisoculi1Temporalbranch2Zygomaticbranchorbicularisoculi,zygomaticus3Buccalbranch3

BuccalbranchBeloworbit,aroundthemouthBuccinator,orbicularisorisetc.4Marginalmandibularbranch5CervicalbranchSubmandubularganglionParasympatheticrootPreganglionicfibre

Superiorsalivatorynucleus

Facial,chordatympaniandlinguenerve

Posteriorganglionicfibre

SubmandibularandsublingueglandSympatheticrootfacialarterySensoryrootlingualnerve(V3)VIIIVestibulocochlearnerveVestibularganglionSpiralganglion

(maculaoftheutricleandsaccule)(spiralorganofCorti)VestibulocochlearnerveInnerear(Internalacousticmeatus)EmerginginthegroovebetweenTheponsandthemedullaoblongataVestibularnucleusCochlearnucleusIXGlossopharyngealnerveSensorynucleiA.NucleustractussolitariusRostralpart(receivetaste)Caudalpart(generalvisceralafferent)MiddlethirdCarotidbodyandsinusB.SpinaltrigeminalnucleusMotornucleusC.NucleusambiguusStylopharyngeusD.Inferiorsalivatorynucleus

Parasympatheticfibre

Lesserpetrosalnerve

Oticganglion

Auriculotemporalnerve

ParotidglandMedullaoblongateLeavingtheskullthroughthe

jugularforamenSuperiorganglionInferiorganglionInternalcarotidarteryandveinTongueandpharynx1.Tympanic

nerveInferiorganglionTympaniccavity,TympanicplexusBranch

Greaterpetrosalnerve

Mucosaofthetympaniccavity,auditorytube

Lesserpetrosalnerve

OticganglionParotidgland2.CarotidbranchOftendoubleJustbelowthejugularforamenDescendsontheICAWallofthecarotidsinusandbodyBaroreceptors

Chemoreceptors3.PharyngealnerveThreetofourfilamentsPharyngealbranchofVagus,

sympathetictruck->pharyngealplexusPharyngealmucosa(sensory)4.MuscularbranchStylopharyngeus5.TonsillarbranchesMiddleandposteriorpalatinenerve->plexusTonsil,softpalate,fauces6.LingualbranchesThevallaepapillaeMucosaofthepostsulcalpartGustationandgeneralsensibilityOticganglionJustbelowtheforamenovalePreganglionicparasympatheticfibreLesserpetrosalnerve<-GlossopharyngealnerveInferiorsalivatorynucleusPostganglionicfibre-auriculotemporalnerveParotidglandOticganglionParasympatheticroot

PreganglionicfibresTympanicbranchofGlossopharyngealnerveviathelesserpetrosalnervePostganglionicfibresAuriculotemporalnerve->parotidglandSympatheticrootmeningealmiddlearteryplexusMotorrootmeningealbranch

Tensortympani,tensorvelipalatineSensoryrootparotidbranchXVagusnerve1.DorsalnucluesGeneralvisceralefferentnucleus80%preganglionicparasympatheticfibreUndertheVagaltriangleDistribtedtothenon-striatedmuscleHeart,bronchi,lungsandoesophagusStomach,liver,pancreas,spleen,smallIntestine,proximalpartofthecolon2.NucleusambiguusMedullaoblongataBelowGlossopharyngealnerveStriatedmusclePharyngealconstrictors,intrinsicPharyngealmuscle,palateandupperoesophagus3.NucleustractussolitariusSpecialvisceralgustatoryafferentFacial,glossopharyngeal,vagusnervesAnterior2/3–chordatympani,greaterpetrosalbranch(VIIN.)Posterior1/3–lingualbranch(IXN.)Tracheal,laryngeal,pulmonary4.SpinaltrigeminalnucleusTheskinoftheexternalear,meningesoftheposteriorfossa,foramenmagnum

8-10vagalrootletsBelowglossopharyngealnerveInthegroovebetweentheoliveandtheinferiorcerebellarpedunclePassthroughjugularforamenAccompaniestheaccessorynerveSharinganarachnoidandduralsheathSuperior(jugular)ganglionSomaticsensoryganglionSpinaltrigeminalnucleus(?)centralprocessessuperiorgangliontheskinoftheexternalear,duramaterInferior(nodose)ganglionVisceralsensoryganglionNucleustractussolitariusinferiorganglionHeart,larynx,lungsandalimentarytractDescendsverticallyintheneckintheCarotidsheathBetweeninternaljugularveinandICAorCCA(commoncarotidartery)TotherootoftheneckRightvagusTocrossthefirstpartofthesubclavianAEnteringthethoraxBehindrightofthetracheaPassesbehindtherightpulmonaryhilumRightPosteriorpulmonaryplexusPosterioroesophagealplexusPosteriorvagaltrunkLeftvagusBetweenleftCCAandsubclanianarteryCrossestheleftsideoftheaorticarchPassbehindtheleftpulmonaryhilumLeftposteriorpulmonaryplexusAnterioroesophagealplexusAnteriorvagaltrunkThroughtheoesophagealdiaphragmaticopeingEnteringtheabdomenBranchesofdistributionInthejugularfossa Meningeal AuricularIntheneck Pharyngeal Branchestocarotidbody

Superiorlaryngeal

Recurrentlaryngeal(right) CardiacInthethorax Cardiac

Recurrentlaryngeal)left) Pul