颅骨--高清立体解剖

Thereareapproximately206bonesinyourbodyand22*ofthembelongtoyourskull.Thesebones,allirregularinshape,fittogetherlikepuzzlepieces.*Exceptyourteeth.Whileteetharebone-likestructuresandarelocatedintheskull,theyarenotcounted.Skullbonesareeitherpartofthefacialskeleton(bonesthatmakeuptheface)......orpartofthecranium(bonesthatprotectthebrain).(skullcap)istheupperpartofthecranium.Eachboneinthecalvariaisnamedforthecorrespondinglobeofthecerebrum--thelargestpartofthebrain.Thefrontalboneprotectsthefrontallobe.Theparietalbonesprotecttheparietallobes.Theoccipitalboneprotectstheoccipitallobe.Thetemporalboneprotectsthetemporallobe.Theoccipitalbonegivesshapetothebackoftheskull.Theoccipitalboneprotectstheoccipitallobeandalsogivespassagetothemedullaoblongata,whichconnectsthebraintothespinalcord.Theforamenmagnumisthenameoftheopeningintheoccipitalbonethroughwhichthebrainandspinalcordconnect.:Thepointedprojectionsyouseeatthebottomofthetemporalboneiscalledthestyloidprocess.Musclesoftheneckandextrinsictongueattachthere.(inblue)cometogethertoformthesagittalsutureandalsoformthecoronalsuturewiththefrontalbone.Factoid:thereare17suturesintheskull.:Thecribiformplateoftheethmoidsupportstheolfactorybulb(theterminusoftheolfactorynerve).(10ofthe12belongtothefacialskeleton).:8bonesformthecranium.14bonesformthefacialskeleton.Sharethisslideshow!*theroofofthemouth*thefloorandlateralwallofthenasalcavity*thefloorsoftheorbits.(the“cheekbones”).Factoid:Peoplewithhighcheekbonessimplyhavezygomaticbonesthatprojectoutwardmore.(insidetheorbits)containthelacrimalsacsthatcontinueasthenasolacrimalducts,ortearducts.Thenasalandlacrimalbonesaresomeofthesmallestbonestomakeupthefacialbones.!AlltheimagesandcontentarefromHumanAnatomyAtlas,thebest-sellingandmostcomprehensive3Dhumananatomygeneralreferenceavailable.iOS|PC|Mac|Android|FacebookHumanAnatomyAtlasisalsoavailableforsitelicense.