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Samenvatting Anatomie van het hoofd & de hersenen (LP6)

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Deel 1 : neurocranium - anatomie v/d hersenen : durasepten, liquorruimtes, alle lobben & gyri - nuclei basali - grote, kleine en tussenhersenen - craniale zenuwen - bloedvoorzieningen: cirkel van Willis Deel 2 : viscerocranium - botten van het hoofd - spieren hoofd + bezenuwing: kauwspieren, oogspieren, mimische spieren, tongspieren ..

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Neurocranium (LP6)


Het zenuwstelsel
Basisfunctie Richting signaalgeleiding:
 Signaalwaarneming -> afferent
 Integratie -> efferent
 Signaal afgifte
Functieplaats : macroscopische structuur:
 Somatisch zenuwstelsel -> grijze stof
 Visceraal zenuwstelsel -> witte stof
Topografie
 Centraal zenuwstelsel
 Perifeer zenuwstelsel


Sulci (sulcus) =
groeven
Windingen= gyri (gyrus)

Kleine hersenen & grote hersenen




1. begrippen en grenzen
Het centrale zenuwstelsel

,Hersenen (= encephalon):
als onderdeel vh CZS parallel met ruggenmerg
onderverdelen in :
 eindhersenen= telecephalon
 tussenhersenen= diencephalon
 kleine hersenen= cerebullum
 hersenstam= truncus encephali :
o middenhersenen= mesecephalon
o brug = pons (vormt brug tss midden- & keline hersenen & verlengde merg)
o verlengde merg = medulla oblongata

Hersenpan – bescherming rondom de hersenen

Oriëntatie
Andere orientatie: tijdens embryonale ontwikkeling buigen eindhersenen over hersenstam => schuine
orientatie
Blauwe as = longitudinale
as
- ventraal
- dorsaal

Rode volle as (in hoek 80°
met blauwe)
=> vr eind- en tss-
hersenen
- parietaal
- basaal
- occipitaal
- frontaal / oraal




Vlakken:
Komt overeen met
suturen

, Hersenvliezen
na verwijderen schedeldak nt rechtstreeks
op hersenen mr op hersenvliezen
 Dura mater encephali (buitenste harde
vlies)
 Sinus sagittalis superior:
grootste collectevat hersenen (grote
spleet)
 Granulationes arachnoideae:
Kleine bolletjes naast spleet
=> fct: resorptie cerebrospinal vocht

Na verwijderen v dura mater
Zacht vlies, bestaande uit 2 lagen:
 Arachnoidea ‘spinnenwebvlies’ (links)
 Pia mater: onder arachnoidea
= binnenste zachte laag kleeft tegen hersenweefsel zelf
ligt mee in sulci ( arachnoidea: blijft aan opp.)

Sinus sagitallis superior



 Tss arachnoidea:
subarachnoidale ruimte
 Groene draadjes: kleine
uitsulpingen richting pia
mater




Durasepten

Tss hersenhelft:
tussenschot =>
durasepten



=> opgebouwd uit
hard/stug vlies
=> onderdeel van dura
mater




Falx cerebi = Septum tss linker &rechter hersenhelft
Tentorium cerebelli= septum tss kleine en grote hersenen

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Uploaded on
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Written in
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