Across
- 3. When plaque builds up on the inside of arteries.
- 5. When the heart beats too fast.
- 6. We have 5 liters of this liquid in our body.
- 7. Allow blood to flow in only one direction.
- 8. When the heart beats too slow.
Down
- 1. Pumps blood throughout the body.
- 2. They carry oxygen or carbon dioxide and nutrients away from the heart.
- 3. Abnormal rhythm of the heart.
- 4. They connect arteries and veins.
- 7. Little blood tunnels that carry oxygen, carbon dioxide, and nutrients to the heart.