What is TRUE about sinus venosus:
Sinus venosus is a paired structure but shifts towards right associating only with the right atrium as the embryonic hea develops. The left poion shrinks in size and eventually forms the coronary sinus and oblique vein of the left atrium, whereas the right pa becomes incorporated into the right atrium to form the sinus venarum (smooth pa of right atrium).
Forms rough wall of right atrium
Forms smooth wall of right atrium
Forms right coronary sinus
Forms left leaflet of coronary sinus
Bronchopulmonary Segments, Embryonic veins