| A | B |
| atria/atrium | two upper chambers of the heart |
| ventricles | two lower chambers of the heart |
| Coronary Circulation | flow of blood to and from the tissues of the heart |
| Pulmonary Circulation | flow of blood through heart to lungs and back to heart |
| Systemic circulation | largest part of system, oxygen rich blood flows to all parts except heart and lungs |
| arteries | carry blood away from the heart |
| veins | blood vessels that carry blood back to heart |
| capillaries | microscopic blood vessels that connect arteries and veins |
| plasma | liquid part of blood in which oxygen,nutrients, & minerals dissolved |
| hemoglobin | chemical in red blood cells, carry oxygen from lungs to body |
| platelets | irregularly shaped cell fragment that helps clot blood, form fibrin |
| lymph | tissue fluid that has diffused into lymphatic capillaries |
| lymphatic system | carries lymph, drains into large veins near heart, helps fight infection and disease |
| lymphocytes | type of white blood cell that fights disease |
| Lymph nodes | bean shaped organs; filter materials taken up by lymphocytes |