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Samenvatting blok A1
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Samenvatting van blok A1 Huidtherapie met de volgende vakken: C-ANFY, C-CHEM, C-FARM, C-LILA, C-LOEP, C-NEUR en C-PSYCH
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Samenvatting Blok A1C-ANFY
De huid is het grootste orgaan van ons lichaam. Het zorgt voor 16% van ons
lichaamsgewicht.
3 kiembladen:
--> endoderm (inwendige organen)
--> mesoderm (huid en onderhuids weefsel, spieren, botten)
--> ectoderm (opperhuid met adnexen)
De huid bestaat uit:
Epidermis, ectoderm
o Stratum corneum
o Stratum lucidum (5e laag bij handpalmen en voetzolen)
o Stratum granulosum
o Stratum spinosum
o Stratum basale
Dermis, mesoderm
o Bevat bloedvaten, zenuwtakjes en lymfebanen
o Stratum papillaire
o Stratum reticulair
o Collageen, elastine en reticulinevezels
Subcutis
o Vetcellen, bloedcellen en bindweefsel
o Warmte-isolerende laag, energiedepot en waterreservoir
o Melk- en zweetklieren
o Zenuwen/huid’sensoren’
Cellen die zich bevinden in de epidermis
Keratinocyten
--> hoofbestanddeel van de epidermis
--> delen zich in de onderste laag epidermis
--> differentiëren zich tot hoorncellen (duurt 28 dagen)
Melanocyten
--> = pigmentcellen
--> dendritische cellen in de basale laag
--> produceren melanine pigment
--> melanine wordt gemaakt in organellen genaamd melanocyten
--> beschermen tegen Uv-straling
Melanine
--> eumelanine, bruin/zwart
--> feomelanine, geel/rood
--> bepaalt dus huidskleur en bescherming tegen Uv-straling
Langerhanscellen
--> dendritische cellen gelegen in de suprabasale lagen
--> afkomstig uit beenmerg
Cellen van Merkel
--> functie is niet bekend
--> aangenomen wordt dat ze dienstdoen als mechanoreceptoren
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