Across
- 4. A bone that bends to protect vital organs.
- 7. This system allows you to breathe.
- 9. An organ that helps you breathe.
- 10. This system includes the largest organ of the body.
- 11. A bone that supports the body weight.
- 13. It carries deoxygenated blood through the body.
- 15. This is the only voluntary muscle.
Down
- 1. This muscle is only in the heart.
- 2. This muscle has no striations.
- 3. The organ that pumps blood to the rest of the body.
- 5. This system moves blood around the body.
- 6. The middle layer of skin.
- 8. This system provides support for us to walk or sit.
- 12. This system connects to all parts of the body.
- 14. This system moves your body.