| A | B |
|---|
| SA-node | natural pacemaker |
| ventricles | the lower chambers of the heart |
| valves | prevent backflow of blood |
| atria | the upper chambers of the heart |
| the septum | the wall that separates the left and right side of the heart |
| coronary thrombosis | a blood clot in the heart |
| heart disease | heart attacks |
| angina pectoris | chest pains due to lack of oxygen in the cardiac or heart muscle |
| what is the heart anyway? | a muscle |
| aorta | largest artery in the body |
| vena cava | largest vein in the body |
| pulmonary circulation | blood flowing to and from lungs |
| cardiac circulation | blood flowing to and from the heart |
| diastolic and systolic | used to determine blood pressure |
