耳的解剖生理-精品ppt课件

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1、OtologyAppliedAnatomy&PhysiologyTheearconsistsofthreeparts:external、middle、internal外耳中耳内耳temporalboneLocatedatthetwosidesofthecranialbonePartofthelateralwallandbottomofcranialboneItconsistsapartof：middlecranialfossa,Posteriorcranialfossa.Anatomyoftempor

2、alboneConsistsoffiveparts：squamousportion、tympanicportion、mastoidportion、petrousportion、styloidprocess1.externalear→containstwoparts:auricleandtheexternalauditorymeatusauricle：HelixTriangularfossaAntihelixConchaTragusAntitragusLobuleFeaturesoftheskin:.p

3、ainful.exudation.disfiguration.easytobefroozingAuralpseudocystCongenitalpreauricularfistulaexternalearexternalauditorymeatusLong2.5～3.5cmCartilagiousportion(outer1/3)Bonyportion(inner2/3)“S”pullingthepinnaupwards、backwardsandoutwards2.middleearContainsf

4、ourparts：tympaniccavitythepharyngotympanictubethetympanicantrumthemastoidprocessmiddleear1.tympaniccavityItisacavityfullofgasandlocatesbetweenthetympanicmembraneandtheexternalwalloftheinnerearThreepartsandsixwallsmiddleear1.tympaniccavityThreeparts:Meso

5、tympanumEpitympanumHypotympanum.middleear1.tympaniccavitySixwallsofthetympaniccavityThelateralwall:tympanicmembrane、externalwalloftheatticThemedialwall：thelateralwalloftheinnerearTheanteriorwall：Theposteriorwall：Thesuperiorwall：Theinferiorwall：middleear

6、1.tympaniccavityThelateralwalltympanicmembrane9mmlong8mmalongthinkness0.1mmthreelayers:outerskin,middlefibre,innermembrane45°tympanicmembranestapes鼓索malleusincusFacialnerve咽鼓管鼓窦入口鼓窦乳突气房middleear1.tympaniccavityThemedialwall(thelateralwallofinnerear)Vest

7、ibularwindowCochlearwindowProminenceoffacialcanalLateralsemicircularcanal外半规管凸vestibularwindow3.2mm2鼓岬promontory蜗窗cochlearwindow2mm2面神经管垂直段Themedialwall(thelateralwallofinnerear)面神经管凸(水平段)cochleariformprocessmiddleear1.tympaniccavityTheposteriorwalluppe

8、rpart-aditus,theprominenceoflateralsemicircularcanal.Infero-mediapart-Pyramidaleminencebottompart-theperpendicularpartofthefacialnerve颈内动脉管internalcarotidarterycanalTheanteriorwall咽鼓管鼓口ostiumtympanicumtubaeauditivae鼓膜张肌半管口semican