Which term describes a wall that divides the heart into its left and right sides?

Which term describes a wall that divides the heart into its left and right sides?

• A. Interatrial Septum
• B. Interventricular Septum
• C. Septum
• D. Endocardium

Answer: (C)

The wall that divides the heart into left and right sides is called a septum. A septum is any partition that separates two cavities, so in the heart, it refers to the walls that separate the left and right sides. There are two specific septa: the interatrial septum between the atria and the interventricular septum between the ventricles. The endocardium is simply the inner lining of the heart chambers, not a partition. So the general term septum best fits the description of a wall separating the heart’s left and right sides.

The wall that divides the heart into left and right sides is called a septum. A septum is any partition that separates two cavities, so in the heart, it refers to the walls that separate the left and right sides. There are two specific septa: the interatrial septum between the atria and the interventricular septum between the ventricles. The endocardium is simply the inner lining of the heart chambers, not a partition. So the general term septum best fits the description of a wall separating the heart’s left and right sides.