What are the four parts of the intraventricular septum?

The intraventricular septum consists of four main parts: the muscular septum, which forms the bulk of the structure; the membranous septum, located at the upper part of the septum and is thinner; the inlet septum, which is associated with the atrioventricular valves; and the outlet septum, which is related to the outflow tracts of the ventricles. Together, these components separate the left and right ventricles of the heart, playing a crucial role in maintaining proper blood flow and pressure during cardiac cycles.