Across
- 3. what causes communible diseases
- 5. cells that deliver oxygen to the brain
- 6. main active ingredient in cigarettes
- 8. carry blood away from the heart
- 9. carry blood towards the heart
- 11. connects bone to bone
- 13. connects bone to muscle
- 14. this type of disease can infect others
- 15. other term for high blood pressure
Down
- 1. cells in the blood that fight disease
- 2. the strongest bone
- 4. liquid that makes up most of your blood
- 7. other term for skull
- 10. poisonous gas
- 12. this type of disease cant infect others