Simplify the following text for a Grade 7 native English-speaking person.
Original: The integumentary system ( From Latin integumentum , from integere ` to cover ' ; from in - + tegere ` to cover ' ) is the organ system that protects the body from damage , comprising the skin and its appendages ( including hair , scales , feathers , and nails ) .
Simplified: Skin , hair , scales , feathers and nails make up the integumentary system .