| A | B |
| artery | carries blood away from the heart |
| vein | returns blood to the heart |
| capillaries | vessels connecting arteries and veins |
| vessel with valves | veins |
| sphygmomanometer | instrument to measure blood pressure |
| blood pressure | force of blood against the wall of a blood vessel |
| 120/80 | blood pressure reading |
| 72 beats/minute | pulse rate |
| aneurysm | bulging artery wall |
| stroke | condition when carotid artery is blocked |
| cardiac arrest | condition when coronary arteries are blocked |
| cholesterol | fatty material that can clog arteries |
| embolism | moving clot |
| angioplasty | "balloon" technique to unblock coronary arteries |
| by-pass | surgery to re-route blood around a blocked artery |
| systole | pumping phase of heart beat |
| diastole | relaxation phase of heart beat |
| s.a. node | natural pacemaker |
| heart murmur | faulty heart valves |
| lub-dup | heart beat sounds |