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Protects body Maintains temperature Eliminates waste Gathers information Produces Vitamin D (from sunlight) Epi = upon, above, over Derm = skin Epidermis Dermis Top layer of skin 20-30 cells thick Cells are dead No blood vessels or nerves What does this mean? No feeling or bleeding from this layer Shed every 2 weeks Makes up 95% of dust Bottom layer of skin Contains nerves, blood vessels, sweat glands, hairs, and oil glands Pores: openings in the skin Follicles: place from which hair grows Oil in follicles waterproofs hair and keeps skin moist Melanin: Skin pigment found in the lowest part of the epidermis Protects body from sunburn “Black” people have a lot of melanin “White” people don’t have very much melanin The epidermis is partially or fully burned away The epidermis is fully burned away, part of the dermis is burned Usually causes blistering The epidermis and dermis are fully burned away