1.) network - a group interconnecting parts or system that work together as a unit
2.) organs - body parts that perform specific functions
3.) oxygen - a gas in air and water that is necessary for life on Earth
4.) systems - groups of organs that work together in the human body
5.) joint - the point where two bones meet
6.) skeleton - the frame that supports the body and gives it shape
7.) skull - the helmet-shaped bone that protects the brain and supports the muscles in a person's face
8.) spine - the column of bones that forms the backbone of some skeletons
