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

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

 Top layer of skin  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