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Samenvatting LP12: pelvis

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Samenvatting LP12: pelvis

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Samenvatting LP12: Pelvis
Algemene begrippen en grenzen

Pelvis & Perineum
Grenzen:
• Bekkeningang: tussen (promontorium) thv S1 loopt naar os
pubis, 50-60° gekanteld bij staande positie
• Bekkenbodem (perineum)
• Bekkenwand: gevormd door beenderige, ligamentaire
structuren en spieren
Inhoud: Eindstructuren van
• gastro-intestinaal systeem
• urinair systeem
• reproductief systeem
Excavatio’s:
Peritoneum vd abdominale holte loopt deels naar pelvis, waar peritoneum beetje ingesneden is
Man: Vrouw:
Excavatie rectovesicalis: tussen blaas en rectum Excavatie vesiscouterina: tussen blaas en uterus
= Douglasholte Excavatie rectouterina: tussen rectum en uterus,
caudaal verder in septum rectovaginale
= Douglasholte
Pelvis major: grote bekken
• sluit caudaal abdominale spiercylinder = deel vh abdomen
• Os ilium
Pelvis minor: kleine bekken
• Os Ischium
• Os sacrum
• Os coccygis




1

, Ligamenten:
Ligamentum sacrospinosum: Ligamentum sacrotuberosum Membrana obturatoria:
driehoekig ligament • driehoekig, breder • vult foramen obturatorium
basis op sacrum en coccyx • basis gans sacrum en coccyx bijna volledig op
apex op spina ischiadicum • apex naar tuber ischiadicum • laat enkel een kanaal vrij

—> functie: steunen van os sacrum, verhindert kantelen
—> 2 foramina:
• Foramen ischiadicum majus:
- superior tov lig sacrospinosum en spina ischiadica
- belangrijkste doorgangsroute
- M piriformis loopt hierdoor en splitst foramen in:
- craniaal (n glutealis sup en bloedvaten craniale gluteaalstreek)
- caudaal (n glutealis inf, n ischiadicus (sacrale plexus, inn van onderste lidmaat), begin
van n pudendus (sacrale plexus, ook door foramen ischiadicum min), N voor M
obturator internus en voor M quadratus femoris)
• Foramen ischiadicum minus:
- caudaal van lig sacrospinosum, boven lig sacrotuberosum
- onder de bekkenbodem
- doorgangsroute voor perineum & gluteaalstreek
- n pudendus verder verloop naar perineum
• Canalis obturatorius:
- N obturatorius
- Bloedvaten van bekken naar dij




2

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Uploaded on
February 11, 2026
Number of pages
10
Written in
2025/2026
Type
Summary
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