Across
- 4. upper chamber on right side of heart
- 5. group of cells working together to perform function
- 10. tissue sends electric messages
- 11. comes from food we eat
- 13. liquid cells are filled with
- 16. system of blood vessels in the heart
Down
- 1. Upper chamber on left side of heart
- 2. comes from air we breathe
- 3. smallest blood vessels
- 6. connects to circulatory system to get oxygen
- 7. tissue contracts to produce movement
- 8. carries food and gasses to cells
- 9. human body is made of many different kinds
- 12. blood flows away from heart in vessels called
- 14. tissue that gives bodies structure
- 15. blood flows back to the heart in vessels called