Across
- 1. hollow cavity in an organ
- 4. carry oxygenated blood away
- 5. synthesizes in red marrow
- 6. largest artery in the body
- 8. 2 upper cavities in the heart
- 9. branching blood vessels
- 11. sac-like membrane that surrounds the heart
- 13. 5 types
Down
- 1. deoxygenated
- 2. carry blood from right ventricle
- 3. innermost layer of the heart wall
- 7. Cava
- 10. carry blood away from heart
- 12. muscle