2.  Protects body  Maintains temperature  Eliminates waste  Gathers information  Produces Vitamin D (from sunlight)

3. EpidermisDermis  Epi = upon, above, over  Derm = skin

4.  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

5.  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

6.  Melanin: Skin pigment found in the lowest part of the epidermis  Protects body from sunburn

8.  “Black” people have a lot of melanin  “White” people don’t have very much melanin

9.  The epidermis is partially or fully burned away

10.  The epidermis is fully burned away, part of the dermis is burned  Usually causes blistering

11.  The epidermis and dermis are fully burned away