| Questions | Answers |
|---|---|
| What do veins contain? | Carbon-dioxide and blood. |
| What colour are your veins? | Blue. |
| How thin are your arteries? | As thin as a piece of string. |
| Where does your oxygen and blood come from? | The heart. |
| which is the smallest blood vessle in the vein family? | Your capillaries |
| How many capilleries have you got? | 40 billion. |
| How many layers of blood vessles do you have? | 3. |