Across
- 3. Largest artery in your body
- 6. Connect arterioles with venules
- 10. Carries oxygenated blood away from the heart
- 11. Small veins
Down
- 1. Small arteries
- 2. Stop blood flowing backward in the heart
- 4. Four main sections of the heart
- 5. Returns deoxygenated blood back to the heart
- 7. The lower chambers of the heart
- 8. Main organ of the circulatory system
- 9. The upper chambers of the heart