Human Body Systems

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Across
  1. 4. supports the body, protects organs, allows movement, and makes blood cells.
  2. 6. takes in oxygen and releases carbon dioxide as we breathe.
  3. 7. delivers nutrients and oxygen to all cells in the body. It carries carbon dioxide and other waste products away from cells.
Down
  1. 1. removes liquid wastes from the body.
  2. 2. breaks down food into essential nutrients and expels solid waste from the body.
  3. 3. moves bones, causes the heart to beat, and moves food through the digestive system.
  4. 5. controls body movement and controls communication between the brain and the environment.