Across
- 3. describes blood containing oxygen
- 6. describes blood containing CO2
- 7. the valve leading from the left atrium to the left ventricle
- 10. a lower chamber of the heart
- 11. an upper chamber of the heart
- 12. largest artery in body, that sends blood out to whole body
Down
- 1. the artery that leads to the lungs
- 2. the vein that leads from the lungs to the heart
- 4. the valve leading from the right atrium to the right ventricle
- 5. blood vessel that leads away from the heart
- 8. blood vessel that leads to the heart
- 9. the body system concerning the heart, blood vessels, and blood