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Your Skin

The Skin is the soft outer layer covering of vertebrates. The skin is the largest organ, made up of multiple layers and guards the underlying muscles, bones, ligaments and internal organs. Because it interfaces with the environment, skin plays a key role in protecting the body against external threats and excessive water loss.

The skin is a very busy organ and is divided in a number of layers. At the bottom of the epidermis, new skin cells are being created all the time. These cells take about 2 weeks to move to the top of the epidermis, replacing dead cells, which rise to the surface of the skin. These form a strong protecting layer, covering the whole body. We loose these cells, however at a rate of over 30,000 cells per minute.

The next layer down is the dermis. The dermis contains nerve endings to provide sensitivity to the skin, blood vessels to bring nutrients and oxygen to skin cell, sebaceous glands to lubricate and protect the skin, and sweat glands to keep the temperature of the body just right. It also contains collagen and elastin, which give the skin its flexibility.

Underneath the dermis we find the last layer of the skin is called the subcutaneous layer. It is made mostly of fat and helps your body stay warm and absorb impacts to protect the tissue and other organs underneath it. The subcutaneous layer contains also the roots of the hair follicles.


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