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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 |