About the interventricular septum, which of the following descriptions are correct?
A.Its position is indicated by the anterior and posterior interventricular grooves. B.It can be divided into muscular and membranous parts. C.The upper part is thicker than the lower part. D.It pressents the fossa ovalis in the lower part. E.If the interventricular septum is defect, it is one of congenital cardiac disease called as ventricu正确答案ABE