人体解剖学-颅神经-1cranial-nerves

Cranialnerve,Dept.ofAnatomyZhouHongYing,KeyPointsofLearning,NameComponentsPassingthroughPeripheraldistributionCentralconnectionFunction,olfactoryopticocculomotortrochleartrigeminalabducens,facialvestibulocochlearglossophryngealvagusaccessoryhypoglossal,Cranialnerve,Cranialnerve:connectwithbrain,OpeningsandfissuresonbaseofskullforCN,CRANIALNERVE,Generalsomaticmotor(GSM)Generalvisceralmotor(GVM)Specialvisceralmotor(SVM)Generalsomaticsensory(GSS)Specialsomaticsensory(SSS)Generalvisceralsensory(GVS)Specialvisceralsensory(SVS)EverypairofCNhasnotalloftheabovecomponents.,CRANIALNERVE,PuresensoryCN,olfactoryn.opticn.vestibulocochlearn.,OlfactorynerveCNI,Puresensory(SVS)-smellOlfactorybulboftelencephalonLeavescranialcavitythroughforaminaincribriformplateDistributestomucosaofsuperiorpartoflateralandseptalwallsofnasalcavity.,OlfactorynerveCNI,opticn.(),puresensory(SSS)-sightConnectswithopticchiasmaofdiancephlon.Leavescranialcavitythroughopticcanal.Distributestoretinaofeyeball,opticnerve,chiasma,optictract,vestibulocochlearconveysimpulsesfrominnerear.senseofpositionterminatesinvestibularN,senseofhearingincochlearN,VestibulocochlearN.,Puresensory(SSS)InternalacousticmeatusinternalearVestibularnerveisresponsibleforequilibriumCochlearnerveisresponsibleforhearing,PuremotorCN,oculomotorn.trochlearn.abducensn.accessoryn.hypoglossalnerve,oculomotorn.trochlearn.abducensn.,Oculomotorn.(GSMandGVM)MidbrainSuperiororbitalfissureSuperiordivision-superiorrectusSuperiororbitalfissureLateralrectusm,accessoryn.,TworootsPuremotorMedullamedulla;jugularforamenGVSfiberstocarotidsinusandbody,oropharynx,andposterior1/3oftongueSVSfibersreceivetastefromposterior1/3oftongueSVMfiberssupplystylopharyngeusGVMfiberssynapseinoticgangliontosupplytheparotidgland,()glossopharyngealn.distributestopharyngealmuscle,parotidsalivarygland,()distributestocarotidbody(chemoreceptors)carotidsinus(baroreceptors),()glossopharyngealn.distributestotonguegeneralsomaticandspecialtastesensory(posteriorthird),()glossopharyngealn.,Thevagusnerveintheneck,thorax,andabdomen,Mixed;medulla;jugularforamen;carotidsheath,onthesideofmediastinum,esophgealplexus,esophgealhiatusanteriorandposteriorvagaltrunks,Parasympatheticfibersinthevagusnerve,Parasympatheticfibersoriginatefromthedorsalmotornucleusofvagus.Theyaredistributedwidelythroughouttherespiratory,gastrointestinalsystemandcardiovascular.GVM,Theafferentfibersofvagusn.,1.receptorforgeneralsensationintympanicmembrane,externalautitorymeatus,andpartoftheconchaoftheexternalear.2.receptorforgeneralviscerasensationaredistributedwidelythroughoutthemucousmembraneoftherespiratory,gastrointestinalsystemandinternallayerofthecardiovascular.3.chemoreceptorsaredistributedinaorticbodiesandbaroreptorsintheaorticarchGVS,GSS,motorfibersinthevagusnerveinne