Science Extra Credit
Across
- 2. The largest bone in the human body
- 6. system Protects vital organs
- 9. An object in the body that helps maintains homeostasis
- 12. Cells that transmit messages around the body and brain
- 13. Pumps blood through the body
- 14. movement Movement you can control
- 16. system The body system that breaks down nutrients from food
- 17. system The human body system that allows oxygen to enter the body and allows carbon dioxide to exit it.
- 18. Creates energy for the cell
Down
- 1. The smallest Unit of life
- 3. One of the two bones in your arms
- 4. Stores bileLiver Cleans the blood of infection
- 5. movement Movement you can not control
- 7. system The human body system that transfers liquid waste out of the body
- 8. A rigid and dense material inside the body
- 10. a blood vessel that transfers blood away from the heart
- 11. muscles that strengthen the knees
- 15. The bones in your toes and fingers