| A | B |
|---|
| aorta | Largest artery in the body |
| arteriole | Small artery |
| atrium (plural form atria) | upper chamber(s) of the heart |
| capillary | smallest blood vessel |
| Carbon Dioxide | Gas (waste) released by body cells to be exhaled. |
| diastole | relaxtion phase of the heartbeat |
| endocardium | Inner lining of the heart |
| mitral valve | Valve between the Left atrium and L. ventricle |
| myocardium | Muscle layer of the heart |
| pericardium | Sac-like membrane surrounding the heart |
| pulmonary artery | Artery carrying blood from the heart to the lungs |
| pulmonary vein | vessels carrying oxygenated blood from the lungs to the heart. |
| pulse | Beat of the heart as felt through the walls of the arteries |
| septum (septa- pl) | Partition |
| sinoatrial node | Pacemaker of the heart |
| sphygmomanometer | Instrument to measure blood pressure |
| systole | Contraction phase of the heartbeat |
| tricuspid valve | Located between the R. atrium and R ventricle. |
| ventricle | Lower chambers fo the heart |
| venule | small vein |
