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Samenvatting Stelselmatige Weefselleer H10: Zenuwstelsel
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Samenvatting gebaseerd op slides van professor Vral met bijhorende notities van in de les, alles wat je voor de theorie moet kennen van dit onderdeel.
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Samenvatting H10: Hersenen enruggenmerg
Inhoud
1. Centraal zenuwstelsel en perifeer zenuwstelsel.................................................................................2
2. Grote hersenen of cerebrum..............................................................................................................2
2.1 Inleiding........................................................................................................................................2
2.1.1 Cerebrale cortex.....................................................................................................................2
2.2 Grijze stof......................................................................................................................................3
2.2.1 Moleculaire plexiforme laag= lamina molecularis..................................................................3
2.2.2 Buitenste korrellaag= lamina granularis externa....................................................................3
2.2.3 Buitenste pyramidale laag= lamina pyramidalis externa........................................................4
2.2.4 Binnenste korrellaag= lamina granularis interna....................................................................4
2.2.5 Binnenste pyramidale laag= lamina pyramidalis interna........................................................4
2.2.6 Polymorfe multiforme laag= lamina multiformis...................................................................4
2.2.7 Lamina limitans gliae superficialis..........................................................................................4
2.3 witte stof.......................................................................................................................................4
3. Hippocampus......................................................................................................................................5
3.1 Functies van het limbisch systeem................................................................................................5
4. Cerebellum.........................................................................................................................................5
4.1 Inleiding........................................................................................................................................5
4.2 Cellagen van de cortex..................................................................................................................6
4.2.1 Moleculaire laag= stratum moleculaire.................................................................................6
4.2.2 Purkinjelaag= stratum ganglionare........................................................................................6
4.2.3 Korrellaag= stratum granulare...............................................................................................6
4.3 Afferente vezels............................................................................................................................6
4.3.1 Klimmende vezels..................................................................................................................6
4.3.2 Mosvezels..............................................................................................................................7
4.4 Circuits..........................................................................................................................................7
4.5 Efferente vezels.............................................................................................................................7
5. Ruggenmerg of medulla spinalis.........................................................................................................7
6. Hersenvliezen of meningen................................................................................................................7
6.1 Pia mater......................................................................................................................................8
6.2 Arachnoidea..................................................................................................................................8
1
, 6.2.1 Arachnoidale membraan.......................................................................................................8
6.2.2 Dwarse beschotten of trabeculae..........................................................................................8
6.3 Dura mater....................................................................................................................................9
6.4 Ruimten bekleed met mesotheel..................................................................................................9
1. Centraal zenuwstelsel en perifeer zenuwstelsel
- Perifeer zenuwstelsel
o Satelliet cellen
o Schwanncellen
- Centraal zenuwstelsel
o Oligodendrocyt: vormen myelinehuls
o Astrocyten: bloed-hersenbarrière
o Ependymcellen
o Microgliacellen: macrofagen
o Witte stof: gemyeliniseerde axonen en neuroganglia
o Grijze stof
Cellichamen van neuronen
Gemyeliniseerde en vooral niet gemyeliniseerde axonen en neuroganglia
Bevat geen collageen zeer zacht waardoor het makkelijk beschadigd kan
worden
<-> perifeer zenuwstelsel: endoneurium/perineurium/epineurium
- Hersenvliezen
o Bindweefsel met bloedvaten
o Omgeven de hersenen
- Witte stof
o = merg
o Gliacellen
o Vezels van neuronen
- Nuclei= centra van grijze stof in witte stof
o Thalamus
o Putamen
o Globus pallidus
- Neuropillemma= vezelachtig weefsel
o Vezels van gliacellen en neuronen gelegen tussen cellichamen
2. Grote hersenen of cerebrum
2.1 Inleiding
2.1.1 Cerebrale cortex
- = schors gelegen aan buitenkant <-> grijze stof ligt bij ruggenmerg centraal
- Fissuren+ sulci groter oppervlak meer synapsen/netwerken vormen
- Indeling (fylogenetisch)
o Iso-of neocortex
90%
Recent
Minstens 6-lagig
2
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