Science

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