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HeadandNeckTemporalandInfratemporalregionspartIII
MaxillaryNervesandPterygo-pala<neGanglion
Dr.MohamedElFikyProfessorofAnatomyandembryology
Maxillarynerve
MaxillaryNerve
ForamenRotundum
Pterygo-pala<neFossa
Pterygo-maxillaryFissureInferiorOrbitalFissure
Infra-orbitalGrooveInfra-orbitalCanal
Infra-orbitalForamen
TheMaxillaryNerve
Origin:Itisabranchoftrigeminalnerve
Courseitarisefromtrigeminalgaglionandthenitinterthelateralwallofthecavernoussinusandthenleavetheskullthroughtheforamenrotundumtointertheptregopla<nefossathenitintertheorbitthroughtheinferiororbitalfissureandcnon<nueasinfraorbitalnerve
Maxillarynerve
1-MeningealBranch2-TwoSensoryGanglionicBranches
3-PosteriorSuperiorAlveolarNerve
4-Zygoma<cNerve
LooptoLacrimalNerve
Zygoma<co-temporalNerveZygoma<co-facialNerve
5-Infra-orbitalNerveMiddleSuperiorAlveolar AnteriorSuperiorAlveolar
Palpebral
Nasal
Labial
TheMaxillaryNerveBranchesandDistribu<on
ThePterygo-pala<neGanglion
SiteItpresentintheptrtegopla<nefossa
ThePterygo-pala<neGanglion
Roots1-parasympathe<croot:greatersuperficialpetrosalwhicharisefromthefacialnerve2-sympathe<croot:sympathe<cplexussuroundingtheinternalcaro<d3-sensoryroot:branchesfrommaxillarynerve
Branches:Areactuallybranchesofthemaxillarynerve.(1) Orbital branches:passes through the inferior orbital fissure tosupplytheorbitalperiosteum.(2)Pharyngealbranch:passesbackwardsthroughthepalatovaginal(3)GrealerpaLa>nenerve:(4) Lesser pala>ne nerves: descends through the lesser pala<ne,canal and comeout through lesserpala<ne foramen to supply themucousmembraneofthesoWpalateandpala<netonsil.(5) Long sphenopala>ne (nasopala>ne): Passes through thesphenopala<ne foramento reach thenasalcavity, crosses the roofof the nose and descends obliquely on nasal septum. Its terminalpartpassesthroughtheincisivecanaltosupplytheanteriorpartoftheoralsurfaceofthehardpalate.(6) Short spenopala-ne: passes through the sphenopala<neforamentoreachthenose.itsuppliesthemucousmembraneoftheupperpartofthelateralwallofthenose.
Pterygopala<neGanglion
Autonomicroot(Nervetopterygoidcanal)(VidianNerve)
Greaterpetrosal(parasympathe<c)
Deeppetrosal(sympathe<c)
Sensoryroots
Maxillarynerve Roots
Superiorsalivarynucleus
FacialnerveGreatersuperficialpetrosalnerve
Pterygopala<neganglion
Maxillarynerve
Lacrimalnerve
Zygoma<cbranchofMaxillarynerve
NerveloopBetweenLacrimalandzygoma<cnerves
1-Greaterpala<ne
Posteriorinferiorlateralnasal
2-Lesserpala<ne
3-Posteriorsuperiorlateralnasal(shortsphenopala<ne) 4-Nasopala<ne
(Longsphenopala<ne)5-Pharyngealbranch
6-Orbitalbranch
ThePterygo-pala<ne(Spheno-pala<ne)GanglionDistribu<on(Branches)
HayFever
HayFeverConjunc<vi<s
HayFeverItisallergicrhini<sSymptoms:• Nasalconges<on• Runnynose• Sneezing• Nose&eyeitchingwithexcesstearsandallergicconjunc<vi<s