5th Grade Chapter 3 Test Review

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Across
  1. 2. system that collects oxygen from the air
  2. 3. blood vessels that carry blood to the heart
  3. 8. blood vessels that carry blood away from the heart
  4. 9. muscle involved in breathing
  5. 11. tube that sends food to the stomach
  6. 13. two tubes that come from the trachea
  7. 15. air sacs wrapped in capillaries
  8. 16. tube that sends oxygen to the lungs, also called the windpipe
  9. 18. system that removes waste from the blood
  10. 21. fluid that makes food soft
  11. 22. gas animals exhale
  12. 24. cells in blood that carry oxygen
  13. 25. sticky substance that traps germs
  14. 26. liquid part in blood
  15. 29. a flap that keeps blood flowing in the right direction
  16. 30. two organs that remove waste from the blood
  17. 32. the gas animals breathe in
  18. 33. flap that stops food from going down the trachea
  19. 34. clump up to stop bleeding
Down
  1. 1. the bronchi branching into these many tubes
  2. 4. organ that breaks down food with acid
  3. 5. hairlike structures that sweep away germs
  4. 6. system that involves the transport of materials around the body
  5. 7. tube that absorbs water and releases waste
  6. 10. long tube that absorbs food particles
  7. 12. cells in blood that protect against germs
  8. 14. small blood vessels that exchange materials with cells
  9. 17. tubes that carry blood
  10. 19. organ that pumps blood around the body through the blood vessels
  11. 20. system that breaks down food
  12. 23. organ that holds urine
  13. 27. major organ of the respiratory system that holds many parts
  14. 28. red liquid in the circulatory system
  15. 31. liquid with waste that exits the body