Across
- 3. keeps both the veins and artery together
- 4. main organ of the circulatory system
- 7. it part of the veins
- 9. sends blood towards the heart
Down
- 1. Exchanges gases to remove carbon dioxide and add oxygen to blood
- 2. sends blood away from the heart
- 5. largest vessel in our body and part of the circulatory system
- 6. cava the large vein carrying blood into the heart
- 8. it's part of the artery
- 9. allow to flow in one direction