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PT205 Quiz 2
| Term | Definition |
|---|---|
| heart | the prime mover that propels blood throughout the body |
| apex | the pointed, inferior portion of the heart |
| endocardium | a thin, smooth layer of epithelial cells that lines the heart's interior |
| myocardium | the thickest layer of the heart that pumps blood through the vessels |
| epicardium | a serous membrane that forms the thin, outermost layer of the heart |
| pericardium | the sac that encloses the heart |
| right ventricle | pumps the venous blood received from the right atrium to the lungs |
| left atrium | receives blood high in oxygen content as it returns from the lungs via pulmonary veins |
| septum | separates the right and left sides of the heart |
| systole | active phase of the heart contraction |
| diastole | resting phase of the heart contraction |
| cardiac output | the volume of blood pumped by each ventricle in 1 minute |
| purkinje fibers | also called conduction myofibers |
| sinsus rhythm | a normal heart rhythm origination at the SA node |
| bradycardia | slow heart rate |
| tachycardia | fast heart rate |
| electrocardiograph | records electrical changes produced as the heart muscle contracts |