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Science Skin Test
Term | Definition |
---|---|
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. |