Across
- 2. main organ of the endocrine system
- 7. system that secretes regulatory hormones
- 8. organ that sends the messages in nervous system
- 9. system that forms the external body covering
- 10. system transports materials in body
- 13. system that allows locomotion
- 14. system that returns fluids to blood vessels
- 15. fast-acting control system
Down
- 1. organ that works with bladder and ureters in the urinary system
- 3. this is eliminated in the urinary system
- 4. this is removed in the respiratory system
- 5. muscular system does this when the body is too cold
- 6. system that breaks down food
- 11. main organ used in the respiratory system
- 12. system responsible for the production of offspring