The Skin & Its Functions:

The Skin:

The human skin in an organ – the largest of the body. It provides a tough, flexible covering, with many different important functions.

Functions of Skin:

Protection:

The skin protects the body from potentially harmful substances and conditions.

· The outer surface Bactericidal, helping to prevent the multiplication of harmful micro-organism. It also prevents the absorption of many substances (unless the surface is broken), because of the construction of the cell on its outer surface which form a chemical and physical barrier.

· The skin cushions the underlying structures from physical injury.

· The skin provides waterproof coating. Its natural oil, sebum, prevents the skin from losing vital water, and thus prevents skin dehydration.

· The skin contains a pigment called melanin. This absorbs harmful rays of ultraviolet light.

Heat Regulation:

Body temperature is controlled in part by heat loss through the skin and sweating.

Excretion:

Small amounts of certain waste products, such as water and salt, are removed from the body by excretion through the surface of the skin.

Warning:

The skin affords a warning system against outside invasion. Redness and irritation of the skin indicate that the skin is intolerant to something, either external or internal.

Sensitivity:

The skin allows the feeling of touch, pressure, pain, heat and cold and also allows us to recognize objects by their feeling and shape.

Nutrition:

The Skin provides storage for fat, which provides an energy reserve. It is also responsible for producing a significant proportion of our Vitamin D, which is created by a chemical action when sunlight is in contact with the skin.

Moisture Control:

The skin controls the movement of moisture from within the deeper layers of the skin.

Source: Beauty Therapy, by Lorraine Nordmann

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