The Skin
- Created by: louiso1
- Created on: 18-02-18 16:09
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- The Skin
- Epidermis
- stratum granulosum
- stratum spinosum
- stratum corneum
- stratum basale
- stratum lucidum
- functions of the skin
- temperature
- insulation, sweat production, goose bumps
- sense organ
- nerve endings (pain, touch, pressure and temperature)
- protection
- ultraviolet rays, water, infection
- vitamin production
- vitamin d in skin reacts with the sun
- absorption
- vegetable oils and patch druch
- excretion
- sweat (water, salt, urea)
- temperature
- Layers
- Epidermis
- thickest on the palms of the hands and soles of the feet
- no blood vessels or nerve endings
- cells on the surface are flat, thin, non-nucleated and dead
- the surface cells are constantly being rubbed off and replaced
- Dermis
- Tough and elastic and is formed from connective tissue
- main cells found here are fibroblasts, macrophages and mast cells
- structures of the dermis: blood and lymph vessels, sensory nerve endings, sweat glands and hairs
- Epidermis
- heat loss
- most of the body's heat loss occurs through the skin
- heat loss through the skin is affected by the difference between body and environment temperature
- Epidermis
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