Across
- 2. allows the blood to flow in one direction
- 4. a gas we inhale to breathe
- 6. connects arteries and veins
- 8. network of channels that transport blood throughout the body
- 9. carries blood/nutrients to the heart
Down
- 1. muscular organ that pumps blood
- 3. main organ in the respiratory system that also plays a role in the circulatory system
- 5. red liquid circulating through the body
- 6. dioxide a gas we exhale out of our body
- 7. carries blood away from the heart