| A | B |
| Atruim | Two upper chambers of the heart |
| Bicuspid Valve | Valve between the left atrium and left ventricle |
| Aortic Semilunar Valve | Heart valve between left ventricle and Aorta |
| Endocardium | thin layer of smooth tissue lining inside of the heart |
| Myocardium | Cardiac muscle tissue |
| Pericardium | 2-layered tissue surrounding the heart |
| Sinoatrial Node (SA Node) | The heart's pacemaker |
| Cardiac Output | total volume of blood ejected from heart per minute |
| Tricuspid Valve | valve between the right atrium and right ventricle |
| Ventricles | Two lower chambers of the heart |
| Angina Pectoris | severe chest pain from lack of O2 supply to the heart |
| bradycardia | slow heart rhythm; less than 60 bpm |
| Apex | tip of the heart |
| septum | the wall that separates the right side of the heart from the left side |
| Congestive Heart Failure | inability of left ventricle to contract effectively; blood backs up into lungs |
| Vena Cava | Largest vein; brings unoxygenated blood from the body to the heart |
| Endocarditis | inflammation of the endocardium |
| Cardiopulmonary circulation | blood circuit that carries blood from the heart to the lungs and back |
| Mitral Valve Prolapse | valve between the left atrium and left ventricle does not close properly |
| Myocardial Infarction | heart attack; caused by lack of blood supply to the heart muscle |
| Pericarditis | Inflammation of the pericardium |
| Rheumatic Heart Disease | heart valve damage from a strep infection |
| Tachycardia | rapid heart rate - over 100 bpm |
| palpitations | feels like the heart is racing |
| Cardiac Catheterization | catheter inserted into femoral artery or vein to take pictures of the heart |