| A | B |
| Arteries | Blood vessels that carry blood away from heart |
| Veins | Blood vessels that carry blood back to heart |
| Capillaries | Very tiny blood vessels that connect arteries and veins |
| Circulation | Transports materials in living things |
| Heart | Pumps blood |
| Blood type | Consists of A, B, AB, and O |
| Lymphatic System | Return fluids back to blood vessels |
| Plasma | Nonliving component of blood |
| Red Blood cells | Are shaped like around plates that are indented in the center |
| Platelets | Are smaller than either red and white blood cells and do not contain nucleus |