Muschii gnatomotori
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Transcript of Muschii gnatomotori
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Muschii gantomotoriMuschii gantomotori
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Muschii masticatoriMuschii masticatori 4 perechi4 perechi Origine-exocraniuOrigine-exocraniu Insertie-pe mandibulaInsertie-pe mandibula Inervatie-n.VInervatie-n.V Actiune-miscarile mandibuleiActiune-miscarile mandibulei
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Muschiul temporalMuschiul temporal Forma de evantaiForma de evantai 3fascicole:anterior,mijlociu,posterior3fascicole:anterior,mijlociu,posterior OrigineOrigine:fosa temporala,linia temporala :fosa temporala,linia temporala
inferioara,fascia temporalainferioara,fascia temporala
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InsertieInsertie-pe procesul coronoid al -pe procesul coronoid al ramurii mand.,pe marginile si fetele ramurii mand.,pe marginile si fetele ei,prelungindu-se in portiunea ei,prelungindu-se in portiunea superioara a marginii ant.a ramului.superioara a marginii ant.a ramului.
InervatieInervatie-nn.temporali profunzi-nn.temporali profunzi
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Muschiul maseter-plat,are Muschiul maseter-plat,are 3parti:superficiala,profunda,fascicol 3parti:superficiala,profunda,fascicol winslowwinslow
1.P.superficiala-1.P.superficiala-origineorigine-marg.inf a -marg.inf a osului zigomatic,partea ant.a osului osului zigomatic,partea ant.a osului zigom.zigom.
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ActiuneActiune-contractia totala a -contractia totala a muschiului ridica mand.sup si muschiului ridica mand.sup si post.,corespunzator unui unghi de 60 post.,corespunzator unui unghi de 60 grade fata de orizontala.grade fata de orizontala.
Contractia separata-trage mand in Contractia separata-trage mand in directia orientarii fibrelordirectia orientarii fibrelor
Fasc.ant este elevator,fasc.mijlociu si Fasc.ant este elevator,fasc.mijlociu si post retropulsia mand.post retropulsia mand.
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InsertieInsertie-marg.post-inf a ramului -marg.post-inf a ramului mand.,tuberozit.maseterinamand.,tuberozit.maseterina
2.Partea profunda-2.Partea profunda-origine-origine-marg.inf a marg.inf a osului zigom.osului zigom.
Insertie –Insertie –fata externa a ramului,intre fata externa a ramului,intre tuberozitatea maseterina si baza tuberozitatea maseterina si baza procesului coronoidprocesului coronoid
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Fascicolul Winslow-neomologatFascicolul Winslow-neomologat InervatieInervatie-n.maseterin-n.maseterin ActiuneActiune-contractia bilaterala-ridica -contractia bilaterala-ridica
mand.superior si anteriormand.superior si anterior Contractia unilat-deplaseaza spre Contractia unilat-deplaseaza spre
lateral unghiul mand.lateral unghiul mand.
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Muschiul pterigoidian medialMuschiul pterigoidian medial OrigineOrigine-fosa pterigoidiana a osului sfenoid-fosa pterigoidiana a osului sfenoid InsertieInsertie-tuberoz.pterigoidiana-tuberoz.pterigoidiana InervatieInervatie-n.pterigoidian medial(n.V)-n.pterigoidian medial(n.V)
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ActiuneActiune-contractia bilaterala-ridica mand. Sup.si -contractia bilaterala-ridica mand. Sup.si ant.contractia unilat-deplaseaza spre medial ant.contractia unilat-deplaseaza spre medial unghiul mand.unghiul mand.
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Muschiul pterigoidian lateral-fMuschiul pterigoidian lateral-fascicul superior ascicul superior si fascicul inferiorsi fascicul inferior
Fascicul sup(infratemporal)Fascicul sup(infratemporal) OrigineOrigine-fata infratemp a aripii mari -fata infratemp a aripii mari
sfenoidului;creasta infratemp.sfenoidului;creasta infratemp.
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InsertieInsertie-marg.ant a discului articular al ATM.-marg.ant a discului articular al ATM. Fasciculul inferior(pterigoidianFasciculul inferior(pterigoidian) origine-lama lat.a ) origine-lama lat.a
procesului pterig.procesului pterig.
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InsertieInsertie-foseta pterigoidiana de pe -foseta pterigoidiana de pe colul mand.colul mand.
InervatieInervatie-n.pterigoidian lateral-n.pterigoidian lateral
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ActiuneActiune-contractia bilat-propulsia -contractia bilat-propulsia simetrica a condilului+discul articularsimetrica a condilului+discul articular
Contractia unilat-deplasarea ant.si Contractia unilat-deplasarea ant.si spre medial a capului mand(miscare spre medial a capului mand(miscare de lateralitate).de lateralitate).
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Muschii suprahioidieniMuschii suprahioidieni Muschiul digastricMuschiul digastric Venter posterior-anterior si medialVenter posterior-anterior si medial Venter anterior-inferior,medial si Venter anterior-inferior,medial si
anterioranterior Tendonul intermediarTendonul intermediar
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Origine-Origine-incisura mastoida(venter incisura mastoida(venter post)post)
- fosa digastrica(venter ant)- fosa digastrica(venter ant) Insertie-Insertie-tendonul intermediar-corpul tendonul intermediar-corpul
si conul mare a osului hioidsi conul mare a osului hioid Inervatie-Inervatie-venter ant-n.milohioidianventer ant-n.milohioidian -venter post-n.VII,IX-venter post-n.VII,IX
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ActiuneActiune-venter post-ridica osul hioid-venter post-ridica osul hioid -venter ant-coboara mand si -venter ant-coboara mand si
ridica osul hioidridica osul hioid
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Muschiul milohioidian-Muschiul milohioidian-intre osul intre osul hioid si mandibulahioid si mandibula
Se uneste cu muschiul colateral Se uneste cu muschiul colateral printr-un rafeu tendinos,formand printr-un rafeu tendinos,formand diafragma gurii sau planseul bucaldiafragma gurii sau planseul bucal
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OrigineOrigine-linia milohioidiana-linia milohioidiana InsertieInsertie-pt.fibrele orizontale-rafeul -pt.fibrele orizontale-rafeul
milohioidianmilohioidian -pt.fibrele oblice-fata ant.a -pt.fibrele oblice-fata ant.a
osului hioidosului hioid
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InervatieInervatie-n.milohioidian-n.milohioidian ActiuneActiune-cobora mand.si ridica osul -cobora mand.si ridica osul
hioidhioid Ridica planseul bucal,sprijinind Ridica planseul bucal,sprijinind
actiunea limbiiactiunea limbii
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Muschiul geniohioidianMuschiul geniohioidian Profund,pe fata endobucala a Profund,pe fata endobucala a
m.milohioidm.milohioid Origine-Origine-spina mentalaspina mentala InsertieInsertie-fata ant.a corpului osului -fata ant.a corpului osului
hioidhioid InervatieInervatie-n.XII-n.XII ActiuneActiune-coboara mandibula,ridica -coboara mandibula,ridica
osul hioid.osul hioid.
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