The anatomy of the heart does not have an anatomical name for the septal ridge, but it does have an anatomical structure for the septum and the supraventricular ridge.
The interventricular septum is the common medial wall, or ventricular septum, of the right and left ventricles, and is composed mostly of myocardium. The septum is covered by endocardium on both sides, and it is about 2 to 8 mm thick, becoming thicker the closer it is to the apical part of the heart. However, there is a small ovoid area in the upper middle portion, which is very thin and lacks myocardium, and is called the septal membrane portion, which is the most common site of septal defects. The supraventricular ridge is located within the right ventricle, between the right atrioventricular orifice and the pulmonary artery orifice, and is an arcuate bulge of ventricular muscle. It marks the division between the inflow and outflow tracts of the right ventricle. When the ventricle contracts, it may participate in narrowing the right atrioventricular orifice.
It is important to consult a medical professional about relevant cardiac anatomy to avoid misinformation transmission and adverse consequences.