- Weefsels die structuren bekleden
- Bedekken zowel inwendige als uitwendige oppervlakten
- Bevat klieren
- Scheiden (klier)producten af
- Gespecialiseerde klieren -> scheiden gespecialiseerde producten af
1.2 Kenmerken - dekweefsel
, De kenmerken van dekweefsel:
- Structuur:
- Cellen dicht opeengeplakt
- Oppervlak:
- Vrij oppervlak blootgesteld aan omgeving
- Inwendig compartiment
- Hieraan gaan we stoffen afgeven of opnemen
- Inwendige transportbuis
Nog andere kenmerken zijn:
- Basaalmembraan:
- Verbindt de weefsels met onderliggende structuren
Dit kan een spier zijn, kan bindweefsel zijn, …
- Avasculair:
- Afwezigheid van bloedvaten
Bloedvaten brengen stoffen en voeren afvalstoffen af. Dit gaat dekweefsel dus op
een andere manier moeten doen dan via bloedvaten
- Regeneratie:
- Constante vervanging cellen
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