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Science Skin Test

Where does skin grow? Is it an organ? It forms on the outside of the body. It is the largest organ of our body, and it forms the integumentary system (w/ hair and fingernails).
Epidermis The outer layer of skin which provides protection and water-proofing qualities. The outer-most layer is dead skin.
Keratinocytes Cells in the epidermis (90% are these). They produce keratin ( a protein that is flexible and waterproof). Also captures sun to make Vitamin D.
Melanocytes Cells in the epidermis responsible for skin color (melanin).
Langerhan Cells Cells in the epidermis responsible for recognizing possibly invasive cells.
Merkel Cells Cells in epidermis for touch reception.
Dermis The middle layer of skin that contains nerves, hair follicles, sweat glands, oil lands, capillaries, collagen, and elastic fibers.
Created by: ABerl