Resumen
Summary FLG221 Skin and thermoregulation
- Grado
- Institución
All the lecture notes per themes/study unit were summarized into these notes, some contain additional information from the textbook
[Mostrar más]Vista previa 2 fuera de 10 páginas
Vista previa 2 fuera de 10 páginas
Añadir al carrito
Añadir al carrito
Vendedor
Seguir
LizeMostert
Vista previa del contenido
FLG 221: Skin and thermorgulationSkin
- Largest organ
- Surface area:1,6 – 1,9 m²
- Thickness: 1 to 2 mm
o thinnest on the eye lids (0.5mm-1mm)
o thickest on the sole and the palm (about 1.5mm)
- Mass: 4 kg
- Consists of two major regions:
1. Epidermis – outermost region
2. Dermis – inner thicker region
Epidermis
- Superficial layer – outermost layer
- Composed of stratified squamous epithelium
- No blood vessels
- No lymphatic ducts
- Contains protein called keratin
- Superficial layer is continuously rubbed off and replaced from the deeper layers
- Cell division takes place in the deepest basal layer and the new cells are pushed upwards
- Consists of 5 layers
- Made of 4 distinct cell types
Cells of the Epidermis
Made of 4 distinct cell types:
1. Keratinocytes
- Most abundant cells (95%)
- Produce the fibrous protein keratin - for strength
- Protective, waterproof
2. Melanocytes
- Produce the brown pigment melanin
- Melanin is produced from tyrosine
- Responsible for skin colour
- Provide protection against UV radiation
3. Langerhan’s cells
- epidermal macrophages
- for immunity
- clear area of debris and pathogens
4. Merkel cells
- sensory cells
- makes contact with nerve ending in dermis
- for touch sensation
Pigmentation of the skin
, Epidermis
Consists of 5 layers: 1) Stratum corneum 2) Stratum lucidum 3) Stratum granulosum 4) Stratum spinosum 5)
Stratum germinativum
Dermis
- Made of connective tissue
- Consists of different cells:
o fibroblasts, macrophages, mast cells
and white blood cells
- Contains:
o blood vessels, lymph vessels and
nerve endings
o collagen fibres(firmness)
o elastic fibres (elasticity)
o sebaceous
o sweat glands
o hair
- Composed of two layers:
o papillary layer
o reticular layer
Los beneficios de comprar resúmenes en Stuvia estan en línea:
Garantiza la calidad de los comentarios
Compradores de Stuvia evaluaron más de 700.000 resúmenes. Así estas seguro que compras los mejores documentos!
Compra fácil y rápido
Puedes pagar rápidamente y en una vez con iDeal, tarjeta de crédito o con tu crédito de Stuvia. Sin tener que hacerte miembro.
Enfócate en lo más importante
Tus compañeros escriben los resúmenes. Por eso tienes la seguridad que tienes un resumen actual y confiable. Así llegas a la conclusión rapidamente!
Preguntas frecuentes
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
100% de satisfacción garantizada: ¿Cómo funciona?
Nuestra garantía de satisfacción le asegura que siempre encontrará un documento de estudio a tu medida. Tu rellenas un formulario y nuestro equipo de atención al cliente se encarga del resto.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller LizeMostert. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for 2,64 €. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
45,681 summaries were sold in the last 30 days
Founded in 2010, the go-to place to buy summaries for 14 years now