Integumentary System
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If you did not have an integumentary system or it failed, you would be very unhappy person.
    If this system failed, here are a few outcomes...

  1. Sweat is a part of homeostasis and when this layer doesn't exist you cannot excrete sweat. Therefore, you could not use this as a way to cool off.
  2. Without the skin, hair, and nails then viruses and bacteria could just get into your body easily!
  3. If there was no integumentary system or it failed rocks and other unwanted objects could get into your body.