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Samenvatting ontleedkunde - myologie h&h - W. Teughels
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Goede mooie samenvatting van het deel myologie hoofd en hals van ontleedkunde. Bevat tekeningen/afbeeldingen
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kaaksierenM. Masseter
• pars superficialis:
‣ Origo: anterieure 2/3 vd arcus zygomaticus
‣ Insertio: tuberositas masseterica
• Pars profunda:
‣ Origo: posterieure 1/3 + binnenzijde vd arc. zygomaticus
‣ Verloop: caudaal
‣ Insertio: tuberositas masseterica
• bedekt door fascia masseterica —> fascia parotis
• Functie:
‣ sluiten vd mond
‣ Schuine vezels: protrusie en retrusie
• Bezenuwing: n. Masseterica (n. Mandibularis)
M. Temporalis:
• origo: fossa temporalis (arc. Zyg. - proc. Front. os zyg. - linea temp. Inferior)
• Verloop:
‣ Anterieur: caudaal
‣ Posterieur: ventraal
‣ Waaier
‣ Vezels convergeren tot pees
• Insertio:
‣ proc. Coronoideus
‣ Anterieure ramus vd manibula
• Bedekt door fascia temporalis maar
• Functie:
‣ sluiten vd mond
‣ Anterieure vezels: translatie bij sluiten
‣ Posterieure vezels: retrusie onderkaak
• Bezenuwing: n. Temporalis (n. Manibularis)
M. Pterygoideus lateralis
• caput minor:
‣ Origo: facies infratemporalis vd ala major os sphenoidalis
‣ Verloop: dorsaal en lateraal
‣ Insertio: gewrichtskapsel + discus articularis
, • caput major:
‣ Origo: lamina lateralis vd proc. Pterygoideus os sphenoidalis
‣ Verloop: dorsaal en lateraal
‣ Insertio: fovea pterygoidea thv collum mandibulare
• functie:
‣ Openen mond: translatie tijdens rotatiebeweging vd discus
‣ Sluiten mond: verplaatsen vd discus —> relaxatie
‣ Bilateraal: Protrusie mandibula
‣ Unilateraal: laterotrusie mandibula (contralateraal)
• Bezenuwing: n. Pterygoideus (n. Mandibularis) —> ook medialis
M. Pterygoideus medialis
• caput minor:
‣ Origo: tuber maxilae + proc. Pyramidalis os palatinum
‣ Verloop: caudaal, dorsaal, lateraal
‣ Insertio: tuberositas pterygoidea
• Caput major:
‣ Origo: fossa pterygoidea vd proc. Pterygoideus
os sphenoidale
‣ Verloop: caudaal, dorsaal, lateraal
‣ Insertio: tuberositas pterygoidea
• Functie:
‣ sluiten mond
‣ Bilateraal: Protrusie mandibula
‣ Unilateraal: Laterotrusie mandibula De
suprahyoidale spieren
M. Mylohyoideus
• origo: linea mylohyoidea
• Insertio:
‣ Anterieur: Raphe: interdigitatie vd 2 spieren
‣ Posterieur: corpus os hyoideum
• Functie:
‣ Vormt mondvloer
‣ Os hyoideum gefixeerd: mondopening
mm
‣ Os hyoideum niet-gefixeerd: mondvloer omhoog bij slikken
• Bezenuwing: n. Mylohyoideus (n. Mandibularis)
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