Science

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Across
  1. 3. stringy substance that helps form scabs
  2. 5. sacs where exchanges of gases takes in place in the lungs
  3. 10. carries blood away from the heart
  4. 12. tubes tubes entering the lungs
  5. 15. muscle below lungs that expands the chest
  6. 16. system of organs including the lungs whose main function is to get oxygen to the blood
  7. 20. blood type that can be donated to other
  8. 21. artery taking blood from the heart to the body
  9. 22. yellowish liquid that carries the blood cells through the blood vessels
Down
  1. 1. blood cell carries oxygen and nutrients to the cells
  2. 2. carry blood towards the heart
  3. 4. main function of the lungs and the oxygen to the blood
  4. 6. system of the heart blood, and blood vessels
  5. 7. tube leading to the lungs
  6. 8. vocal box
  7. 9. pressure placed on the walls of the blood vessels
  8. 11. fight infection and diseases
  9. 13. tags on the cells
  10. 14. upper chamber in the heart that receives blood
  11. 17. back of the throat
  12. 18. lower chamber in the heart that pushes out blood
  13. 19. tiny hairs covering many body tissues