The structure of the skin

Skin - the largest organ of the body. Area adult skin is 1.5 - 2 square meters.

The skin is made up of 3 - x segments:

1. The epidermis (nadkozhnitsa). Multiwall, orogovevayuschy epithelium. The uppermost layer of the epidermis is composed of aging cells, which cover the entire surface of the skin. It is these cells consistently rejected - and shelushatsya vie. The growth of new cells of the upper layer of epidermis is happening in the domestic, its embryonic layer.

2. Derma (actually skin). Loose connective tissue composed of thin and special elestichnyh connective fibers that make her resiliency and elasticity. It provides state of the state of dermis and epidermis skin health.

3. Gipoderma (subcutaneous adipose tissue). Links to the dermis due bodies performs
thermoregulation feature is the "support" the upper layers of skin. leather, which is weakly expressed layer is ageing rapidly, it appears more wrinkles and folds.

Derma to be gipodermoy have a rich network of blood capillaries, piercing the entire fabric to the epidermis. In the dermis is the hair bulb and the sweat and sebaceous glands, glands protoki pass through the epidermis and opened outside porovymi holes. The main functions of the skin:

Protective - the primary function of the skin. Skin tissue to be protected from adverse impacts of the environment.

Wash-out. The difference in skin and sebaceous glands and inflammatory vyhozhu protokov them on the surface of products derived from the body of his life.

Respiratory. The skin permeable to gases and volatile liquids. After the skin is allocated approximately 2% of carbon dioxide emitted light of day, doting about 1% of inhaled oxygen.

Regulatory. Subcutaneous adipose tissue and sweat glands provide body temperature regulation. Receptor. Raspologayutsya receptors in the skin through which we feel pain, cold, etc.