ANATOMY

Detailed explanation-1: -That portion of the septum that separates the right and left atria of the heart is termed the atrial or interatrial septum whereas the portion of the septum that lies between the right and left ventricles of the heart is called the ventricular or interventricular septum.

Detailed explanation-2: -A wall of muscle called the septum separates the left and right atria and the left and right ventricles. These are referred to as the atrial and ventricular septum.

Detailed explanation-3: -The correct option is C Septum. The heart has four chambers. The upper two chambers are called auricles and the lower two chambers are called ventricles. The left and the right side of the heart is separated by a wall called septum.

Detailed explanation-4: -The interventricular septum ensures that blood flows properly through the heart. It flows from the right atrium, into the right ventricle through the tricuspid valve, and then to the lungs. It then returns through the left atrium and into the left ventricle through the mitral valve.

Detailed explanation-5: -An important structure that separates the two ventricles is the interventricular septum. Anatomically it is divided into two parts: a thick, muscular part and a relatively thin membranous part. The muscular part of the interventricular septum separates most of the left and right ventricles from each other.