Across
- 7. system; breaks down food
- 11. System; transports oxygen and CO2
- 14. touch, taste, hearing, sight, smell
- 15. group of organs that work together
- 16. tubes that blood travel through
Down
- 1. chemical messenger
- 2. fluid that transports water, nutrients
- 3. connects two or more bones
- 4. transfers messages to brain from body
- 5. System; filters blood to create urine
- 6. system; consists of brain, spinal cord
- 8. system that regulates hormones
- 9. main organ in the respiratory system
- 10. pumps blood throughout the body
- 12. command center; an organ in the NS
- 13. system made up of bones