Across
- 1. how big is your heart?
- 3. what brings blood to your heart?
- 5. what does your body need to survive?
- 6. what are the thickest vessel in your circulatory system?
- 9. what happens when your heart gets a blockage in a vein?
- 11. what blood cell helps heal infections?
- 12. how many valves are in the heart?
Down
- 1. how much blood is in your body?
- 2. what colour is blood before it gets oxygen?
- 4. where is your blood made?
- 7. what blue cell carries oxygen?
- 8. What is the smallest vessel in this system?
- 10. Where is the heart located?