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