Muscular walls/septa divides the heart into two sides left and right. Interventricular sulcus is the groove in the pericardium that separates the left ventricle from the right ventricles.
It is a shallow surface groove that separates right and left ventricles. It marks the separation between ventricles on front and back surface of the heart. it is of two types, anterior and posterior interventricular sulcus.
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