ANATOMY

Detailed explanation-1: -The heart has four chambers: two upper chambers call the right and left atrium and two lower chambers called the right and left ventricle. There is a wall between the two atria called the atrial septum. There is another wall between the two ventricles, and it is called the ventricular septum.

Detailed explanation-2: -The heart’s septum is a wall separating the right and left sides of the heart. The heart has two upper chambers called atria and two lower chambers called ventricles. The heart’s septum comprises the atrial septum, which separates the atria, and the ventricular septum, which separates the ventricles.

Detailed explanation-3: -Within the primitive atrium forms the septum primum, which separates the right from the left. This septum extends down toward the endocardial cushions. A space in this septum, known as the foramen primum, maintains blood flow within the heart.