Across
- 3. smallest vein
- 4. place where gas exchange takes place at cellular level
- 7. type of circulation where blood goes from heart to lungs
- 9. pertaining to a fast heart
- 11. cavity around the heart
- 12. valve between the left ventricle and aorta
- 14. study of the heart
- 15. Inner layer of heart
- 20. secondary pacemaker
Down
- 1. largest artery in body
- 2. largest vein in body
- 3. lower chamber responsible for pumping
- 5. type of circulation where blood is pushed from the heart to the body
- 6. valve between right atria and right ventricle
- 8. thick, muscular layer of heart responsible for pumping
- 10. upper chamber of the heart
- 13. main pacemaker of heart
- 16. smallest artery
- 17. inflammation of the vein
- 18. division between the left and right atria
- 19. inflammation around the heart