| A | B |
| myocardium | muscular layer of the heart |
| capillaries | delicate microscopic vessels |
| pulmonary circulation | the flow of blood betewwn the heart and lungs |
| INFERIOR vena cava | brings blood from the LOWER portion of the body |
| aneurysm | localized weak spot or balloon-like enlargemetn of the wall of an artery |
| SUPERIOR vena cava | brings blood from the UPPER portion of the body |
| tacycardia | abnormal fast heart rate |
| vasodilation | smooth muscle relaxes, the opening of the artery increases in size and blood pressure decreases |
| epicardium | serous membrane that lines the outer surface of the myocardium |
| veins | conduct blood toward the heart |
| angina | chest pain |
| endocardium | smooth membrane that lines the chambers of the heart and valves |
| vasoconstriction | walls of the arteries contract and the opening of the artery decreases in size |
| pulse | heart beat |
| aorta | the largest artery in the body |
| arterioles | smallest branches of an artery |
| arteries | blood bessels that lead away from the heart |
| hematologist | specilzes of disorders of blood and blood forming tissues |
| cardiologist | specialized in disorders of the heart |
| congestive heart failure | heart is unable to pump due to build up of fluid |
| ventricles | lower 2 chambers that pump the blood |
| systemic circulation | includes blood flow to all parts of the body except the lungs |
| myocardial infarction MI | heart attack |
| atria | upper two chambers that receive blood |
| cardiovascular | pertaining to the heart and blood vessels |
| bradycardia | slow heart rate |