interventricular sulcus interventricular sulcus interventricular sulcus may refer to: posterior interventricular sulcus, one of the two grooves that separates the ventricles of the heart, near the right margin anterior interventricular sulcus, one of two grooves that separates the ventricles of the heart, never the left margin this article is issued from wikipedia. the text is licensed under creative commons - attribution - sharealike. additional terms may apply for the media files.