bulbus cordis
right horn of sinus venosus
truncus arteriosus
right common cardinal vein and right anterior cardinal vein
primitive atrium
left horn of sinus venosus
primitive ventricle
primitive pulmonary vein
endocardial cushion
smooth parts of lv and rv
superior vena cava
trabeculated LV and RV
atrial septum, membranous interventricular septum
atrioventricular node, semilunar valves, trabeculated part of LA and RA
smooth left atrium
smooth part of right atrium
coronary sinus
ascending aorta/pulmonary trunk
