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Samenvatting practicum 6 histologie + illustraties

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In deze samenvatting gaat het over practicum 6 van histologie De naam van het preparaat + microscopische illustraties van de weefsels staan erin

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Practicum 6: Zenuwweefsel


Perifeer zenuwstelsel
Gekleurd met osmium → bindt aan vetten → goede merker voor myelinescheden


M1/14: Geïsoleerde zenuwvezels – kleuring: osmium


- Centraal: axon ( =lange uitloper van zenuwcel) , bevat axoplasma → omgeven door axolemma
- Rond axon: myelineschede → op regelmatige plaatsen onderbroken door knopen van Ranvier (= niet gemyeliniseerd)
- Myelinescheden zijn opgebouwd door cellen van Schwann
Tussen 2 knopen van Ranvier, bouwt 1 Schwanncel de myelineschede op → 1 kern van een Schwanncel
- Internodium = zone tussen 2 knopen van Ranvier
- Insnoeringen van Schmidt-Lantermann: onderbreken de myelineschede

, Practicum 6: Zenuwweefsel


M1/13: Zenuw – kleuring: osmium
- Dwarse doorsnede
- Donkere myelineschede die axon bekleedt
- Af en toe kan je tegen myelineschede, de kern van een Schwann cel terugvinden
- Endoneurium: losmazig bindweefsel met capillairen, rond en tussen zenuwvezels
- Perineurium: bindweefsel laag, omgeven zenuwbundel of fasciculus
- Epineurium: dichte bindweefsellaag, omgeven aantal zenuwbundels, bevatten vetcellen

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Written in
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