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Estructura de la piel

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ESTRUCTURA DE LA P




Soporte y protec
Termorregulació
Fotoprotección:
Sensorial: termin
Expresa estados
Endocrina: síntes
Inmunologica: ce
Curación herida
Intercambio sus

, EPIDER
Ept plano estratificado; avascular, ni linfáticos; nutre x dermis;
Cte regeneración; 28d; psoriasis 4d
Origen ectodermico
Espesor 0,1 (zonas + delicadas) -1,5mm (regiones gruesas)
Estratos:
Córneo
20-30 capas apiladas d cels grandes, aplanadas, anucleadas, m
Palma y pies: > 100 capas
Desprenden continuamente
+ ancha,+ varia grosor, ≠ terminal queratinocitos
Protección
Lúcido: solo palmas y plantas
2-3 capas queratinocitos, aplanados, anucleados, citoplasma ll
Lipoprt
Filamentos intermedios queratina agregados paralelos superfi
Impide entrada y salida agua
Granuloso:
3-5 capas queratinocitos romboidales
c gránulos queratohialina (ligados citoesqueleto, produce q
piel, mantiene cels unidas formando barrera lipidica impermea
Espinoso o de Malpighi:
queratinocitos irregulares y ≠ formas geometricas
Melanocitos y cels Langerhans
Propiedades mecánicas: resistencia daño mecánico y flexible
Basal o germinativo: queratinocitos basales, melanocitos y cels
Separada dermis x MB, anclada x hemidesmosomos (une lamina
Sobre MB: monocapa cel cilíndricas/cubicas c N grande
Tiempo migración: 2 sem; herida: > vel
3 tipos cel

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Uploaded on
May 27, 2023
Number of pages
6
Written in
2022/2023
Type
Class notes
Professor(s)
Carolina
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