Across
- 2. sac surrounding the heart
- 4. blood on the left side of the heart
- 8. blood on the right side of the heart
- 9. fibers responsible for contracting the ventricles
- 10. top 2 chambers of the heart
- 13. valve at the exit of the left ventricle
- 16. valve between the left atrium and ventricle
- 17. divides the heart into right and left halves
- 18. innermost layer of the heart
- 19. vessel responsible for carrying blood away from the heart
Down
- 1. arteries responsible for providing blood to the heart
- 3. muscle layer of the heart
- 5. outermost layer of the heart
- 6. vessel responsible for carrying blood towards the heart
- 7. bottom 2 chambers of the heart
- 11. valve between the right atrium and the ventricle
- 12. largest artery in the body
- 14. vessel where oxygen exchange occurs
- 15. valve at the exit of the right ventricle