| Term | Definition |
| right atrium | receives blood from body and pumps to right ventricle |
| left atrium | receives blood from lungs and pumps to left ventricle |
| right ventricle | pumps blood to lungs |
| left ventricle | pumps blood to body |
| pericardial membrane | protective sac around heart |
| aortic arch | carries O2 blood out to body |
| coronary artery | carries O2 blood out to heart muscle |
| carotid artery | carries O2 blood to head region and brain |
| subclavian arteries | carries O2 blood to arms |
| dorsal aorta | carries O2 blood to lower body |
| renal artery | carries O2 blood to kidneys |
| external iliac artery | carries O2 blood to legs |
| mesenteric arteries and veins | carries blood to and away from intestines |
| pulmonary artery | carries deO2 blood to lungs |
| cranial vena cava | carries deO2 blood from head region to atrium |
| renal vein | carries deO2 blood from kidneys back to vena cava |
| umbilical artery | comes from the placenta carrying O2 blood |
| umbilical vein | carries waste and deO2 blood away from the fetal heart |
| caudal vena cava | carries deO2 blood from lower regions to atrium |