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Samenvatting practicum 3 + foto's
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In deze samenvatting gaat het over practicum 3 van histologie De naam van het preparaat + microscopische illustraties van de weefsels staan erin
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Practicum 3 : Klierepitheel en bindweefsel s.s.E7/39 : glandula submandibularis (speekselklier) – kleuring : trichroom (anilineblauw)
- Exocrien
- Samengestelde vertakte afvoergangen
- Omgeven door bindweefselkapsel (= capsula glandularis)
- Bindweefselsepta verdeelt klierweefsel in lobuli
- Interlobulair bindweefsel bevat bloedvaten en zenuwbundels
- Vnl sereus secreet (eiwitrijk)
- Muceus secreet (glycoproteïnen)
Seromuceuze speekselklier
- Sereuze kliercellen:
Verzameld in bolvormige acini, hierrond myoepitheelcellen
Centraal gelegen ronde kern
Basofiel RER
Apicale secretiegranulen; kunnen worden vrijgegeven door
exocytose in lumen van de acinus
- Muceuze kliercellen:
Verenigd in tubili, bezitten meestal sereus eindstukje = sikkel van
Gianuzzi
Opstapeling mucus aan apicale celzijde kern weggedrukt basaal
Merocriene secretiewijze
, Practicum 3 : Klierepitheel en bindweefsel s.s.
Vrijstelling secretieproducten afgevoerd naar buitenwereld via afvoergangen
Vanuit klierdeeltjes vertrekken schakelstukken die uitmonden in intralobulaire
kanalen speekselbuizen of kanalen van Pflüger (éénlagig cilindrisch epitheel)
Lopen verder als interlobulaire kanalen in bindweefsel tussenschotten
Speekselbuizen en interlobulaire kanalen afgelijnd door hetzelfde type
hoogcilindrische epitheelcellen vertonen basale radiaire streping kenmerkend
voor ionentransporterende cellen
Interlobulaire kanalen monden uit in groot kanaal van Stenon afgelijnd door
kubisch – cilinderisch tweelagig epitheel
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