Across
- 3. ten
- 7. type of blood that passes through the aorta
- 10. eleven
- 11. sixteen
- 13. one
- 14. three
- 17. fifteen
- 18. eighteen
- 20. nine
- 21. two
Down
- 1. seven
- 2. seventeen
- 4. fourteen
- 5. five
- 6. six
- 8. thirteen
- 9. nineteen
- 12. eight
- 15. four
- 16. type of blood that passes through the superior vena cava
- 19. twelve