What are the functions of the outer integument of man?

Mechanical protection of the body by the skin from external factors is provided by a dense horny layer of the epidermis, skin elasticity, its elasticity and depreciation properties of subcutaneous tissue. Thanks to these qualities, the skin is able to resist mechanical stress – pressure, bruising, stretching, etc.
The excretory function of the skin is carried out through the work of sweat and sebaceous glands. The amount of substances secreted through the sweat and sebaceous glands depends on sweat, age, the nature of nutrition and various environmental factors. With a number of diseases of the kidneys, liver, lungs, the release of substances that are usually removed by the kidneys (acetone, bile pigments, etc.) increases.
In the process of vital activity of the body, thermal energy is generated. In this case, the body maintains a constant body temperature necessary for the normal functioning of internal organs, regardless of fluctuations in external temperature. The process of maintaining a constant body temperature is called thermoregulation. At 80%, heat transfer is carried out through the skin by emitting radiant thermal energy, heat conduction and sweat evaporation.

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