Across
- 3. A muscular organ that pumps blood throughout your body.
- 4. Blood vessels that bring blood back to the heart.
- 7. The heart, vessels, and blood are all part of which system.
- 11. Organs in this system brings in oxygen and releases carbon dioxide.
- 12. Oxygen and nutrients pass through these walls to the body.
- 13. This system produces movement in the body.
- 17. Movements in the body that you can control.
- 18. Bones, ligaments, and cartilage form this system.
- 19. The place where two or more bones meet.
Down
- 1. These cells help fight disease.
- 2. This cushions the ends of bones and forms flexible parts like ears and nose.
- 5. Movements in the body that happen without having to think about them.
- 6. Blood vessels that carry blood away from the heart.
- 8. Blood is made up of clear liquid that carries nutrients and blood cells throughout the body.
- 9. this connects bones together at the joint.
- 10. Drum-like sound that your heart makes when it contracts.
- 13. These often work in pairs; when one contracts the other relaxes.
- 14. Organs that support and protect the body and store minerals.
- 15. Main organs of the respiratory system that expand to fill with air.
- 16. carries oxygen throughout the body.