Across
- 2. largest organ protects body
- 4. muscle that pumps blood
- 5. tubes where broken down food is absorbed into the blood stream
- 7. a muscular tube that carries food from the mouth
- 11. system helps breath oxygen and breath carbon dioxide
- 12. organs help move and give strength
Down
- 1. tubes breaks down food absorbed into bloodstream
- 3. carry messages to and from brain
- 6. tube carries air and connects nose to lungs
- 8. vessel tubes carry blood around body
- 9. command center
- 10. system break down food
- 13. smallest building block of living thing