NOT true about right atrium:
* Anterior (rough) pa of right atrium is derived from primitive atrium. * Posterior smooth pa (sinus venarum) is derived from absorption of right horn of sinus venosus. * Crista terminalis is the boundary line between the rough and smooth pas. On outer surface this demarcation is known as sulcus terminalis * Fossa ovalis represents remnant of foramen ovale * limbus fossa ovalis is remnant of septum secundum
Fossa ovalis represent remnant of foramen ovale
Anterior and posterior pas are divided by Crista terminalis
Anterior pa is derived from absorption of right horn of sinus venosus
Posterior pa is smooth
Bronchopulmonary Segments, Embryonic veins