NOT true about right atrium:
Correct Answer: Anterior pa is derived from absorption of right horn of sinus venosus
Description: * 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
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Anatomy
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