Across
- 3. organ that changes ammonia to urea
- 5. organ that produces insulin
- 7. where photosynthesis takes place
- 9. produce antibodies
- 12. sacks of air that inhale oxygen and exhale carbon dioxide
- 13. two tubes that split from the trachea
- 16. the re-crystalizing of salt and sugar in your kidney
- 17. prevents grinding of bones
- 20. the organ that releases metabolic waste and excess water
- 21. system that carries messages from the brain to the rest of the body
- 25. produces energy for a cell
- 29. organ that forces food down the pharynx
- 31. makes blood cells
- 32. tiny branch-like tubes that split from the bronchi
- 34. vessels that carry blood to the heart
- 35. the process of water molecules moving from high to low concentration
Down
- 1. joins muscle to bone
- 2. same size as your fist, shaped like a bean
- 4. thin flap that prevents food from going down the trachea
- 6. the system responsible for removing waste
- 8. grape-like structures at the end of the bronchioles
- 10. long tube that goes from the pharynx to the stomach
- 11. circular muscle at the end of the urethra
- 14. strong muscle that pumps blood around the body
- 15. organ that produces testosterone
- 18. also known as windpipe
- 19. what the lungs exhale
- 22. vessels that carry blood away from the heart
- 23. the outermost layer of a plant cell
- 24. organ that stores bile
- 26. the balancing of fluids, body temperature and blood pressure
- 27. the strong muscle below the lungs
- 28. organ that contains hydrochloric acid
- 30. organ that produces estrogen
- 33. also known as the swine flu