Across
- 3. connects the mouth to the stomach
- 7. lower chamber of the heart
- 8. upper chamber of the heart
- 10. cell fragment that is important in making scabs
- 12. the windpipe
- 13. tiny finger-shaped structure
Down
- 1. connects vein and artery
- 2. exchanges oxygen and carbon dioxide
- 4. where digestion begins
- 5. continues the digestion of food
- 6. large flat muscle
- 8. carries blood away from the heart
- 9. liquid part of blood
- 11. brings air to the lungs
- 13. carries blood back to the heart