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The structure and function of the skin

        THE STRUCTURE AND FUNCTION OF THE SKIN
The skin is the largest organ of the body and performs many functions for health. It is a living, breathing, ever changing organ. It absorbs, repairs, regulates and protects. The skin is made up of three layers, the epidermis, the dermas and the subcutaneous tissue.
Epidermis - this is the outermost layer of the skin, it forms the protective covering of the skin of the body. It contains no blood vessels, but has many small nerve endings.
Dermas - this is the inner layer of the skin that is a highly sensitive and vascular layer of connective tissue. It contains numerous blood vessels, lymph vessels, nerves, sweat glands, oil glands, hair follicles, erector pili muscles and papillae.
Subcutaneous Tissue - is a layer of fatty tissue found below the dermas. This fatty tissue varies in thickness according to the age, sex and general health of the individual. It gives smoothness and contour to the body, contains fat for use as energy, and also acts as a protective cushion for the outer skin.
How is the skin nourished ?
The skin is nourished by the supply of blood and lymph. 0.5 to 0.66 of the total blood supply of the body is distributed to the skin. As the blood and lymph circulates through the skin it contributes essential materials for growth, nourishment and repair of the skin, hair and nails. Nerves of the skin - the skin contains the surface endings of many nerve fibres classified as:
Motor nerve fibres, which are distributed to the erector pili muscles that are attached to the hair follicles. >
Sensory nerve fibres, which react to heat, cold, touch, pressure and pain. Secretary nerve fibres, which are distributed to the sweat and oil glands of the skin.

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Skin Care

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Keywords for this page: The structure and function of the skin
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