Interatrial septum

Limbus fossa ovalis represents : A. Septum primum B. Septum secundum C. Septum intermedius D. None of the aboveNasira Bashir Swikriti Shrestha Dr. Dinesh Gupta

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The limbus of the fossa ovalis is the pronounced anterosuperior margin of the fossa ovalis within the right side of the interatrial septum. It represents the inferior margin of the septum secundum during fetal life.

SUGGESTIVE. OF ..B.. SEPTUM SECUNDUM

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B. Septum secundum (particularly lower margin)

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