The skin is the largest organ of the people. Depending on body size and body weight of their surface 1,5-2 m2. The skin has a mass of 3,5-10 kilograms and makes about 16 percent of body weight from.
While the skin on the feet and hands as a bar skin, is the rest of the body of the so-called skin covered fields. Together with the skin appendages such as hair, nails, sweat and sebaceous glands characterized by skin, the genetic unique appearance of the people and also met a number of tasks:
* Protective, shielding the interior of the body as mechanical, thermal and chemical barrier
* Temperature regulation by constriction or enlargement of the skin blood vessels
* Regulation of water, for example by supply of fluid and salts (sweating)
* Defined function, for example, by perception of thermal stimuli, touch, pain
* Immune function, for example in the context of infectious diseases and allergies
* Communication, for example, by blushing or testator
The knowledge of Finals of the skin is an important prerequisite for their function and disease understanding.