| A | B |
|---|
| Cardiovascular System | The system includes the heart, blood, and blood vessels |
| Arteries | Carry blood away from the heart |
| Veins | Carry blood back to the heart |
| Capillaries | These are the smallest blood vessels that carry blood to the body. |
| Heartbeat | The sound of valves in the heart closing as they push blood through its chambers |
| White blood cells | Cells that defend against disease |
| Red blood cells | Cells that make blood look red |
| Platelets | Cells that help repair the body |
| Blood | Delivers oxygen and nutrients to the body |
| Plasma | Colorless liquid that makes up the majority of the blood |
