Across
- 3. red protein in blood that binds oxygen and CO2
- 6. system that protects
- 10. system that directs
- 14. tissue type that connects and separates
- 17. connective tissue that attaches muscle to bone
- 19. bone that supports organs in abdomen
- 21. system that pumps and delivers materials
- 25. skin hair and nails
- 26. process that allows materials to cross
- 27. system that moves
- 30. where gases are exchanged from air to blood
- 31. required to extract energy fr. glucose by cell resp.
- 33. carries oxygenated blood away from heart
Down
- 1. thin membrane that materials must cross
- 2. carries material to every cell
- 4. absorbs oxygen excretes CO2
- 5. waste product of cell respiration
- 7. tissue type that send signals in body
- 8. carries oxygen and carbon dioxide
- 9. delivers blood to right atrium
- 11. part of nervous system that directs the rest
- 12. system that gathers material and excretes waste
- 13. what organ systems try to support
- 15. tissue type that moves
- 16. brain and spinal cord
- 18. largest artery takes blood from left ventricle
- 20. smallest blood vessel-exchanges material
- 22. related to the lungs
- 23. leg bone
- 24. nerve cell
- 28. part of nervous system that directs movement
- 29. pushes blood through blood vessels
- 32. carries deoxygenated blood toward heart