nerves 颅神经医学英语 ppt课件

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1、SummaryofFunctionofCranialNerveshttps://www.stanford.edu/group/hopes/cgi-bin/wordpress/2010/06/the-hopes-brain-tutorial-text-version/CranialNerveI:OlfactoryArisesfromtheolfactoryepitheliumPassesthroughthecribriformplateoftheethmoidboneFibersrunthroughtheolfactorybulbandterminateintheprimaryol

2、factorycortexFunctionssolelybycarryingafferentimpulsesforthesenseofsmellCranialNerveI:OlfactoryFigureIfromTable13.2CranialNerveII:OpticArisesfromtheretinaoftheeyeOpticnervespassthroughtheopticcanalsandconvergeattheopticchiasmTheycontinuetothethalamuswheretheysynapseFromthere,theopticradiation

3、fibersruntothevisualcortexFunctionssolelybycarryingafferentimpulsesforvisionCranialNerveII:OpticFigureIITable13.2CranialNerveIII:OculomotorFibersextendfromtheventralmidbrain,passthroughthesuperiororbitalfissure,andgototheextrinsiceyemusclesFunctionsinraisingtheeyelid,directingtheeyeball,const

4、rictingtheiris,andcontrollinglensshapeThelatter2functionsareparasympatheticallycontrolledParasympatheticcellbodiesareintheciliarygangliaCranialNerveIII:OculomotorFigureIIIfromTable13.2CranialNerveIV:TrochlearFibersemergefromthedorsalmidbrainandentertheorbitsviathesuperiororbitalfissures;inner

5、vatethesuperiorobliquemusclePrimarilyamotornervethatdirectstheeyeballCranialNerveIV:TrochlearFigureIVfromTable13.2CranialNerveV:TrigeminalComposedofthreedivisionsOphthalmic(V1)Maxillary(V2)Mandibular(V3)Fibersrunfromthefacetotheponsviathesuperiororbitalfissure(V1),theforamenrotundum(V2),andth

6、eforamenovale(V3)Conveyssensoryimpulsesfromvariousareasoftheface(V1)and(V2),andsuppliesmotorfibers(V3)formasticationTicdouloureuxortrigeminalneuralgia-Mostexcruciatingpainknown(?)-Causedbyinflammationofnerve-Inseverecases,nerveiscut;relievesagonybutresultsinlossofsensationonthatsideofthefaceC

7、ranialNerveV:TrigeminalCranialNerveVI:AbducensFibersleavetheinferiorponsandentertheorbitviathesuperiororbitalfissurePrimarilyamotornerveinnervatingthelateralrectusmuscle(abductstheeye;thusthenameabducens)CranialNerveVII:FacialFibersleavethepo