| A | B |
|---|
| sac that surrounds the heart | pericardium |
| period of heart muscle contraction | systole |
| pacemaker of the heart | sinoatrial (SA) node |
| graph of electrical acitivity of heart | electrocardiogram |
| volume of blood ejected per heartbeat | stroke volume |
| wall separating the ventricles | septum |
| large veins going from lungs to heart | pulmonary veins |
| sounds caused by leaky valves | heart murmur |
| muscle of the heart | myocardium |
| valve where blood exits the left ventricle | aortic semilunar valve |
| "blue" blood returning to the heart | deoxygenated blood |
| unsynchronized contractions of heart muscle | fibrillation |
| layer of vein that is thickest | tunica adventitia |
| layer of artery that is thickest | tunica media |
| part of heart that produces lubricating fluid | serous pericardium |
| only layer composing capillaries | tunica intima |
| sensors that monitor pressure in arteries | baroreceptors |
| pressure measured during ventricular contraction | systolic |
| pressure measured during ventricular relaxation | diastolic |
| amount of blood pumped per minute | cardiac output |
| difference between systolic and diastolic pressure | pulse pressure |
| swollen veins caused by pooling of blood | varicose veins |
| varicose veins in the rectal area | hemorrhoids |
| another name for visceral pericardium | epicardium |
| conduct electrical impulses along the ventricles | Purkinje fibers |
| large arteries that branch from lower end of aorta | iliac arteries |
