| A | B |
| veins | vessels with valves |
| arteries | most muscular vessels |
| capillaries | vessels permitting diffusion |
| right atrium | receives blood from vena cava |
| right ventricle | chamber sending blood to lungs |
| left atrium | receives blood from pulmonary veins |
| left atrium | chamber sending blood to body |
| septum | separates heart into two sides |
| chordae tendinae | heart strings |
| myocardium | heart muscle |
| coronary | artery to heart muscle |
| subclavian | artery to arms |
| carotid | artery to brain |
| gastric | artery to stomach |
| renal | artery to kidneys |
| renal vein | vessel with the cleanest blood |
| aorta | largest artery in the body |
| blood pressure | 120/80 |
| systolic | highest pressure in arteries |
| diastolic | lowest pressure in arteries |
| sa node | natural pacemaker |
| av node | sends impulses to bundle of his |
| medulla | brain region regulating heart rate |
| angioplasty | balloon therapy for vessels |
| thrombus | stationary clot |
| embolus | moving clot |
| platelets | clotting blood cells |
| erythrocytes | red blood cells |
| leucocytes | white blood cells |
| anemia | low hemoglobin |
| hemoglobin | picks up oxygen |
| superior | vena cava from head |
| inferior | vena cava from legs |
| bone marrow | where blood cells are made |
| plasma | liquid portion of the blood |
| cardiac arrest | heart attack |
| stroke | oxygen to brain cut off |
| tricuspid | valve between right atrium and ventricle |
| bicuspid | valve between left atrium and ventricle |
| semi lunar valves | examples are pulmonary and aortic |