septum secundum


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Related to septum secundum: foramen ovale, foramen secundum

septum secundum

[′sep·təm si′kən·dəm]
(embryology)
The second incomplete interatrial septum of the embryo, containing the foramen ovale; it develops to the right of the septum primum and fuses with it to form the adult interatrial septum.
References in periodicals archive ?
If the septum secundum fails to form and cover the perforations in the septum primum, the result is a secundum atrial septal defect (ASD).
If defect is in the formation of septum primum-it leads to the formation of ASD (Primum) and if defect is in the formation of septum secundum it forms ASD (secundum).