Across
- 2. one of the main parts of the heart
- 5. cavity or passage
- 6. lung
- 8. relates to heart muscle tissue
- 10. large air passage that leads from windpipe
- 12. carries deoxygenated blood
- 13. carries oxygenated blood
Down
- 1. tube made of cartilage
- 3. part of stomach closest to the oesophagus
- 4. network of blood vessels
- 7. largest artery in the body
- 9. heart attack
- 11. hollow muscular organ