Across
- 2. cell that fights disease.
- 5. sac that mechanical and chemical digestion of food.
- 6. blood vessel; Connects arteries and veins.
- 9. food absorption takes place.
- 11. part of the heart.
- 13. fragment that plays an important part in forming scabs. Blood cells carry oxygen from the lungs to the body cells.
- 14. air to pass to and from the lungs.
- 15. vessel that carries blood away from the heart.
Down
- 1. part of the heart.
- 3. begins.
- 4. unit of life.
- 7. water.
- 8. part of the blood.
- 10. that connects the mouth to the stomach.
- 12. vessel that carries blood back to the heart.