Across
- 3. veins carries oxygenated blood to heart from lungs
- 4. small artery
- 6. upper chamber of heart
- 11. two layered membrane that surrounds the heart
- 12. lower chamber of heart
- 13. artery carries oxygen-poor blood to lungs from heart
- 14. valve between left atrium and right atrium
- 15. largest artery of heart
Down
- 1. septum- or muscular wall that lies between right and left ventricles
- 2. vena cava that brings oxygen poor blood from upper body into heart
- 5. vena cava that brings blood from lower half of body to heart
- 7. valve between right atrium and left atrium
- 8. septum- or muscular wall that lies between right and left atriums
- 9. small vein
- 10. smallest blood vessel