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Integumentar system (over view: (skin fuctions (regulates temperature and…

- - - - *outermost and thinnest most layer of skin
        
        Directly below epidermis thickest layer contains blood vessels,nerves ,muscles,oil,sweat glands,and other structures
        below the dermis is the fatty where body fat is stored
  - - - ultraviolet light activates a molecule in your epidermis to produce vitamin D
      - vitamin D helps your body absorb calcium into your blood from food and sweat glands
    - - skin is used to regulate body temp
      - blood vessels expands to release heat and construct to retain heat
      - dermis has about 3 million sweat glands
      - when blood vessels expand sweat moves out onto the skin heat transfers to the sweat,evaporates and cools the skin
  - - - result when blood vessels in the dermis burst
        
        if a cut tear or other injury is too large there may not be enough cells to properly heal the skin
        
        skin is taken from other parts of the body to help heal and treat the injured sections
      - red blood cells leak into surroundings tissue
      - hemoglobin in blood break down and releases pigment that cause the skin to change color
      - pigment is gradually absorbed into the blood stream and skin beings to look normal again