The skin is the largest organ of our body, for adults it has a surface area of 1,6- 2 m2. Its mass is about 10% of the body’s bulk. As it is in contact with the whole body, diseases often result in skin symptoms. Its colour depends on the pigmentation, the saturation of skin vessels and the thickness of its layers.
- delimits our body from the external environment,
- protects us from physical, chemical effects and the light’s UV radiation,
- it has a heat regulation role: insulates, stores temperature, cools by evaporating perspiration and reduces heat loss (in cold) or increases it by constriction and dilation of blood vessels,
- it takes part in vital processes (sensation, metabolism, skin respiration). Continue reading
The main central layer of our skin. It is 1-3 mm thick having a large intercellular matrix.
- papillary region on the top that is connected to the epidermis,
- reticular or grid- like region that is found beneath (it is composed of collagenous and elastic fibres which ensure its tensile strength and elasticity). Continue reading
The hypodermis is the lowest part of our skin that consists of loose connective tissues as well. Adipose tissue can be found within spaces between the fibres which serves as an energy store for the superfluous nutrients that get into the skin. It has a mechanical function serving as „padding” material. The hypodermis attaches the skin to the underlying muscle or bone. The thickness and form of hypodermis highly determines the aesthetic contour of the face and body (fat cushions). Continue reading