Across
- 2. Flowing towards the heart
- 3. From heart to body and back to heart is called ______ system
- 4. Biggest vein
- 5. SA node is the heart's natural ______
- 7. Blood from lungs leads to the _____ atrium
- 8. This valve divides the two right chambers
- 9. CO2 stands for ____ ____
- 10. Smallest blood vessels
- 12. O2 stands for _____
- 13. Biggest artery
- 14. Blood ends up in the ____ ventricle after right atrium
Down
- 1. Blood from the body goes to the right _____
- 2. Blood from left atrium leads to the left ____
- 5. This valve divides left ventricle and pulmonary artery
- 6. This valve divides the two left chambers
- 10. From heart to lungs and back to heart is called pulmonary _____
- 11. Flowing away from the heart