| A | B |
|---|
| capilaries | smallest blood vessel in the body.It's function is to connect the arteries and the veins. |
| Artery | Blood vessel that carries oxygen-rich blood away from the heart. |
| veins | blood vessel that carries blood to the heart. |
| Heart | muscular organ that pumps blood throughout your body. |
| Circulatory System | It's function is to move blood throughout your body. |
| atrium | the top two chambers in the heart. |
| ventricle | the bottom two chambers in the heart. |
| valves | the flaps that alow blood to flow into a different chamber. |
