Interventricular foramen (embryology)

In human embryology, the primary interventricular foramen is a temporary opening between the developing ventricles of the heart. The ventricles arise as a single cavity is divided by the developing interventricular septum

Interventricular septum

Interventricular septum , abbreviated IVS, is the stout wall separating the lower chambers of the heart from one another....

. Before the septum closes completely, the remaining opening between the two ventricles is termed the interventricular foramen.

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