Summary
samenvatting hoorcollege 17
- Course
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het gaat om het hoofdstuk Hydrocephalus en Spina bifida
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HC 17: Hydrocephalus enspina bifida
1. Anatomie van de hersenvliezen (=
meninges)
Van binnen naar buiten:
Pia mater = zachte hersenvlies
Cerebrospinaal vocht
Arachnoidea = spinachtige substantie (deel van hersenvlies)
Dura mater = harde hersenvlies
Het bot
Periost
De huid Pia mater + arachnoidea + dura mater = meninges
2. Cerebrospinale vloeistof: productie en
circulatie
2.1. Ventrikels
In de hersenen zijn er met vocht gevulde ruimtes = ventrikels (hier zijn er 4
van)
2 laterale ventrikels
Derde ventrikel
Vierde ventrikel
2.2. Productie
Cerebrospinaal vocht (CSF) wordt geproduceerd door plexus chroroideus (in laterale
en derde ventrikel) en is ongeveer 500ml/dag
In de hersenen zelf is er maar ongeveer 150ml CSF aanwezig
In breinatrofie zien we wel dat er meer vocht aanwezig kan zijn
Reabsorptie van het CSF gebeurt in de durale veneuze sinussen
2.3. Circulatie
1) Laterale ventrikels
2) Foramina Monro
3) Derde ventrikel
4) Aquaduct van Sylvius
5) Vierde ventrikel
6) Foramina van Luschka (lateraal) en Magendie (mediaal)
7) Ruggenmerg
8) Granulationes arachnoidales (van Pacchioni) = resorptie van CSF in durale veneuze
sinussen
1
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