Skin Flashcards
Functions of the skin
- Protection (physical, chemical and biological)
- Water balance (sweating)
- Temperature regulation (sweating)
- Immune function (barrier)
- Sensation (temp, touch, pain)
- Metabolism (Vit D producation)
What are the layers of the epidermis?
- Stratum basale
- Stratum spinosum
- Stratum granulosum
- Stratum lucidum
- Stratum corneum
What are Langerhan’s cells?
Immune cells that initiate an immune response to pathogens & cancer cells
What are melanocytes?
- LOCATED IN BASALE
- Produce melanin and transfer it to keratin to protect DNA from UV irritation
What are Merkel’s cells?
IN BASALE
- Sensory receptor cells
What are the 2 layers of the dermis?
Papillary
Reticular
Hypodermis function
Holds integument to underlying tissue and permits movement of skin
- Is the location of subcutaneous fat
What are sebaceous glands?
- Produce sebum to lubricate skin and hair
What are merocrine sweat glands?
- Produce sweat for temperature regulation
What are apocrine sweat glands?
- Found in axillar, pubic regions
- Their secretion attacks bacteria -> odour
What happens during regeneration and what type of damage is it associated with?
- Damaged cells are replaced with new ones and function is restored
- Mild damage
What happens during scar formation and what type of damage is it associated with?
- Damaged cells are replaced with something that is structurally similar, but does not replace the function (e.g. cannot contract)
- Severe damage
What are the stages of wound healing?
- Inflammatory stage
- Proliferative stage
- Maturation stage
