CerebellartentoriumFromWikipedia,thefreeencyclopediaJumptonavigationJumptosearchAvertebratebrainstructureseparatingthecerebellumfromtheoccipitallobesThisarticleisaboutthevertebratebrainstructure.Forthearthropodanatomicalstructure,seetentorium.CerebellartentoriumCerebellartentoriumseenfromabove.DetailsPartofMeningesIdentifiersLatinTentoriumcerebelliNeuroNames1240TA98A14.1.01.104TA25375FMA83966Anatomicaltermsofneuroanatomy[editonWikidata]Thecerebellartentoriumortentoriumcerebelli(Latinfor"tentofthecerebellum")isanextensionoftheduramaterthatseparatesthecerebellumfromtheinferiorportionoftheoccipitallobes.Contents1Structure2Clinicalsignificance3Additionalimages4References5ExternallinksStructure[edit]Thecerebellartentoriumisanarchedlamina,elevatedinthemiddle,andincliningdownwardtowardthecircumference.Itcoversthetopofthecerebellum,andsupportstheoccipitallobesofthebrain.Itsanteriorborderisfreeandconcave,andboundsalargeovalopening,thetentorialincisure,throughwhichpassthecerebralpeduncles.Itisattached,behind,byitsconvexborder,tothetransverseridgesupontheinnersurfaceoftheoccipitalbone,andthereenclosesthetransversesinuses;infront,tothesuperiorangleofthepetrouspartofthetemporalboneoneitherside,enclosingthesuperiorpetrosalsinuses.Attheapexofthepetrouspartofthetemporalbonethefreeandattachedbordersmeet,and,crossingoneanother,arecontinuedforwardtobefixedtotheanteriorandposteriorclinoidprocesses(respectively)ofthesphenoidbone.Tothemiddlelineofitsuppersurfacetheposteriorborderofthefalxcerebriisattached,thestraightsinusbeingplacedattheirlineofjunction.Clinicalsignificance[edit]Braintumorsareoftencharacterizedassupratentorial(abovethetentorium)andinfratentorial(belowthetentorium).Thelocationofthetumorcanhelpindeterminingthetypeoftumor,asdifferenttumorsoccurwithdifferentfrequenciesateachlocation.Additionally,mostchildhoodprimarybraintumorsareinfratentorial,whilemostadultprimarybraintumorsaresupratentorial.Thelocationofthetumormayhaveprognosticsignificanceaswell.Sincethetentoriumisahardst