Across
- 3. tiny finger-shaped structures
- 5. lower chamber of the heart
- 7. blood vessel that carries blood away from the heart
- 10. smallest blood vessel
- 11. large muscular sac
- 12. liquid part of blood
- 15. blood vessel that carries blood back to the heart
- 16. where digestion begins
Down
- 1. blood cell that fights disease
- 2. cell gragment that plays part in forming scabs
- 4. the passages that direct air into the lungs
- 6. tube that connects the mouth to the stomach
- 8. blood cells that carry oxygen from the lungs
- 9. allows air to pass to and from lungs
- 13. group of similar cells that perfrom the same function
- 14. upper chamger of the heart