Lesson 3 Sum It Up!

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