Respiratory and Circulatory

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Across
  1. 3. which blood cell attacks invading pathogens?
  2. 5. serves as a transport system providing nutrients for cells and also carries chemical messages
  3. 7. type of cancer that often begins in a lymph node
  4. 11. also known as the windpipe
  5. 14. the waste product that we breathe out
  6. 19. the tiniest blood vessels
  7. 20. happens when a blood vessel in the brain becomes blocked or bursts
  8. 21. small, bean-shaped organs that remove pathogens and dead cells
  9. 22. organ that pumps blood around your body
Down
  1. 1. this carries gases, nutrients and wastes through the body
  2. 2. tubes that blood travels through
  3. 4. the circulation of blood helps your body maintain this
  4. 6. system that works with the circulatory system to move fluids around your body
  5. 8. part of blood that helps blood clump up so you stop bleeding
  6. 9. condition in which airways are narrowed and it is hard to breathe
  7. 10. without this brain cells die, we also breathe this in
  8. 12. carries blood back to the heart
  9. 13. carries blood AWAY from the heart
  10. 15. soft tissue inside bones where blood cells are produced
  11. 16. system that includes the heart, blood and blood vessels
  12. 17. the fluid part of blood
  13. 18. small lymphatic organs at the back of your throat that defend the body against infection