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Samenvatting anatomie & fysiologie 1, hoofdstuk 5: de huid $5.45   Add to cart

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Samenvatting anatomie & fysiologie 1, hoofdstuk 5: de huid

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Samenvatting van het boek 'anatomie en fysiologie - 8ste editie'. Samenvatting van hoofdstuk 5: de huid. Vives Roeselare, Brugge & Kortrijk.

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  • Hoofdstuk 5
  • April 16, 2023
  • 4
  • 2021/2022
  • Summary
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Anatomie & fysiologie

5. De huid
5.1. Functies

1. Bescherming
2. Temperatuurregeling
3. Vorming & opslag voedingsstoffen
4. Zintuigelijke waarneming
5. Uitscheiding & afscheiding



3 huidlagen:

1. Epidermis (opperhuid)
2. Dermis (lederhuid)
3. Hypodermis (onderhuid of subcutis)



Epidermis -> gelaagd plaveiselepitheel

Dermis -> bindweefsel

Hypodermis -> losmazig bindweefsel



5.2. Epidermis

 Vormt epidermiskammen = strekt zich uit in dermis en grenst aan huidpapillen die in de epidermis uitsteken

5 lagen:

Stratum corneum  Afgevlakte, dode keratinocyten
(hoornlaag)  Waterbestendig, maar niet waterdicht
Stratum lucidum  Glasachtige laag
(heldere laag)  Alleen in dikke huid (bv. voetzool)
Stratum granulosum  Keratinocyten vormen keratine (hoornstof)
(korrellaag)  Keratinevezels ontwikkelen zich naarmate
cellen dunner en vlakker worden
 Geleidelijk aan verdikken
plasmamembranen, de organellen vallen
uiteen en cellen sterven af
Stratum spinosum  Keratinocyten zijn onderling door
(stekellaag) desmosomen verbonden
Stratum basale  Diepste, basale laag
(basaalcellenlaag)  Hechting aan basaal membraan
 Bevat basale (stamcellen), melanocyten &
tastcellen (merkelcellen)
 Vormt epidermiskammen
Dikke huid -> 5 lagen dunne huid: 4 lagen (geen stratum lucidum)

Vingerafdrukken laten het patroon van epidermiskammen zien

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