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