| A | B |
| artery | vessel that carries blood away from the heart |
| atrium | upper chamber of the heart |
| capillary | microscopic blood vessel that connects arteries and veins |
| hemoglobin | chemical that carries oxygen and carbon dioxide in the blood |
| lymph node | organ that filters out microorganisms and foreign materials |
| lymphocyte | white blood cell carried in the lymphatic system |
| plasma | liquid part of the blood that carries nutrients and minerals |
| pulmonary circulation | flow of blood from the heart to the lungs and back to the heart |
| systemic circulation | flow of blood from the heart to other organs and tissues except heart and lungs |
| ventricle | lower chamber of the heart |