HET INTEGRUMENT
1. De huid
A. Functie
Mechanische, beschermende barrière + immuunsysteem
Voorkomt uitdrogen
Thermoregulatie
Sensorische functie
Aanmaak vitamine D Te kort botproblemen
Leverancier: haar, nagels, hoorn en eeltlagen
B. Bouw
3 lagen
o Epidermis = Opperhuid
Basale laag:
- 1 laag cellen
- keratinisatie (= verhoornen van afgestorven cellen)
Stratum spinosum:
- cilindrisch kubisch
- 2-4 lagen cellen
- synthese keratine hoornlaag
Stratum granolosum
- opnemen keratinekorrels
- cellen worden stug celactiviteit stopt kern verdwijnt plat
Stratum lucidum
- transparante band
Stratum corneum = hoornlaag
- stevige en moeilijk doordringbare laag
- 20 tot 100 cellagen
- cel verliest kleeflaag en komt los van huid
o Dermis = Het Leven = Lederhuid = bindweefsellaag
Onderste laag:
- collageenvezels mechanisch beschermende laag
Bovenste laag:
- bloedvaten, lymfevaten, zenuwen ,haarfollikels, huidklieren,
lederhuidpapillen
- oppervlaktevergroting oppervlaktevoeding
o Subcutis = hypodermis = onderhuid
Los bindweefsel beweeglijkheid
Vetweefsel, bloedvaten en zenuwen subcutane injecties
, B. De haren = Pili
Dekharen
o Opvallende haartype
o Bepaald lengte en kleur
o Ondervacht: primaire, secundaire en bijharen
Wolharen
o Fijnere, eerder golvende structuur
o Onder de dekharen
o Wintevacht
Borstelharen
o Stugge haren
o Meervoudige haarpunten
o Dominante type
Lange haren
o Lange, elastische, glanzende haren
o Blesharen
o Manen
o Spoorharen
o Baardhalen
Wimpers
o Op de oogleden
Neusharen
o In de neusholte
Oorharen
o In de uitwendige gehoorgang
Tastharen
o Lange stijve haren
o Wortel wat veneuze sinus (= kluwe bloedvaatjes)
o Zenuwuiteinden (= gevoelszenuw)
o Op kop
o Haarwervels
o Haarlijnen
o Haarlijnkruisen
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