Zusammenfassung der Ressource
The Integumentary System
- Skin structure
- The Epidermis
- keratinized, stratified squamous epithelium
- 4 (5) layers 1. stratum corneum 2. stratum Lucidum (only in palms and soles) 3.stratum Granulousum 4.stratum spinosum 5.stratum basale
- not vascularised. recieves nourishment by diffusion
- The Dermis
- thick region of skin
- vascularised
- 2 main regions 1. papillary region. - protrusions into epidermis 2. reticular region
- joined to epidermis by DERMO-EPIDERMAL JUNCTION
- additional structures
- hair
- nails
- Glands
- ECCRINE - sweat glands. temperature regulation.
- APOCRINE - scent glands. in axillae and genitals
- SEBACEOUS - produce secretions to lubricate structures. i.e. skin or hair.
- Overall skin functions