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Medical Term:

interatrial foramen secundum

 

Definition: a secondary opening appearing in the upper part of the septum primum in the sixth week of embryonic life, just before the closure of the interatrial foramen primum.

Synonym(s): ostium secundum, secondary interatrial foramen

© Copyright 2016 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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