ANATOMY

Detailed explanation-1: -The atrial septum is the tissue wall which separates the two upper chambers of human heart into right and left atrium.

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 interatrial septum is a thin wall of tissue that separates the two upper chambers of the heart, called the right and left atria.

Detailed explanation-4: -The interventricular septum, also known as the ventricular septum, refers to the triangular wall of cardiac tissue that separates the left and right ventricles (i.e., the lower chambers) of the heart. The entire interventricular septum can be further divided into two parts: a muscular portion and a membranous portion.

Detailed explanation-5: -The septum separates the atria and ventricles in such a way that it forms a barrier between the heart chambers and this prevents mixing of oxygenated and deoxygenated blood.