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Samenvatting Verpleegkundig Redeneren En Handelen Inleidend 2 - de huid
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Volledige samenvatting over de huid
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Anatomie – de huidAnatomie vd huid
1. Opperhuid = epidermis
2. Lederhuid = dermis
3. Onderhuid = hypodermis
1. Epidermis (opperhuid):
= gelaagd plaveiselepitheel
à dikke huid (0,5mm) -> bestaat uit 5 lagen
- Handpalmen
- Voetzoelen
à dunne huid (0,08mm) -> bestaat uit 4 lagen
- Rest vh lichaam
ð Levensduur 1 cel: 2 tot 4 weken
à stratum corneum (hoornlaag)
à stratum lucidum (enkel in dikke huid)
à stratum granulosum
à stratum spinosum
à stratum spinosum (= kiemlaag)
- = stratum germinativum
, Stratum basale:
= kiemlaag
ð Bevat geen bloedvaten
o Difussieoppervlak met lederhuid
§ Epidermiskammen: ook zichtbaar in stratum corneum Zorgen voor
§ Dermale papillae oppervlaktevergroting
ð Basaal membraan
ð Stamcellen (=kiemcellen)
o Celdelingslaag -> onder delen doorgroeien naar boven toe
o Bron van vervangende cellen
ð Melanocyten
o Vormen melanine die worden gestimuleerd door het menaocystimulerend H
ð Zintuigen (zie functies)
Tussenliggende lagen:
Stratum spinsum: (bevat stekelcellen)
ð Boven de kiemlaag
ð Verdere celdeling -> waardoor het dekweefsel dikker wordt
Stratum granulosum: (korrelige laag)
ð Keratinekorrels in cytoplasma
o Vormen keratine
§ Ook terug te vinden in hoeven, nagels, haren, hoornen en veren
ð Geen celdeling
Stratum lucidum: (doorzichtige laag)
ð = afgevlakte laag vol keratine
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