Across
- 2. back of head
- 4. belly button
- 8. cheek
- 10. system including heart and blood
- 14. system that includes skin, hair and nails
- 15. lower back
- 16. groin
- 18. wrist
- 19. chin
- 20. thigh
Down
- 1. breast
- 3. back of knee
- 5. ear
- 6. buttocks
- 7. SYSTEM that filters liquid waste from blood
- 9. forehead
- 11. forearm
- 12. system that sends chemical messages through body
- 13. calf
- 17. system that transmits messages; includes brain
