How does your skin grow?
1. As you grow, your skin grows, too. In fact, throughout your lifetime your skin keeps growing. Stare at your arm for about 60 seconds. Can you see any changes? probably not. now, with your fingernail, gently scrape the surface of your skin. What you see are tiny specks that are flakes of skin cells. This is quite normal. Every hour your body sheds about one million dead skin cells.
2. Skin is strong and tough. It protects the muscles and organs underneath. It also keeps dangerous germs from entering the body. What keeps your skin strong? Do you know how your skin grows?
3. Skin is made up of three layers. Each layer has a function, or a different job to do. The bottom layer is thick and holds sweat glands and nerves, which help you feel. The sweat glands insulate, or keep the body from getting too hot. Cells in the glands make sweat. Sweat reaches the surface of the skin and dries, keeping you cool.
4. The middle layer of your skin has millions of cells. These cells grow and divide into other cells. As new cells are made, some are pushed to the top layer. The cells pushed to the surface are dead skin cells. The dead layer of skin rubs off. Then a new layer of skin takes its place. This keeps your skin healthy. Your skin keeps growing this way even as a mature adult.
5. Imagine, every month you have an almost completely new outer skin! It would be truly amazing to watch this change happen. But the growth and change of skin is invisible to the naked eye.
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