septal tissue
septum
The section of the heart that divides the left and right side of the heart is called the interventricular septum.
The septum divides the left and right sides of the heart.
atrial septum
the septum
A single wall that divides two cavities is a septum. A heart has a septum dividing the right and left sides.
The midsagittal plane divides the right and left sides of the brain into two equal sections. A plane divides the body into two equal sides.
This is an interesting question. In a sense, the right and left sides of the heart do not work independently. The only thing I can think of that makes them independent is the physical structure of the atrioventricular septum. There is muscle tissue that divides the heart in to 4 chambers. One of these pieces of tissue divides the heart into right and left sides (which is very important). Blood from the right side of the heart should be directed to the lungs for oxygen absorption and carbon dioxide excretion. Blood from the left side of the heart receives blood from the lungs for distribution to the body. If there were no separation between the right and left side of the heart, there would be a mixing of oxygenated and deoxygenated blood. This would basically lead to a condition of insufficient oxygen supply for the body. Electrically and physiologically, however, the heart functions the same way regardless of which side you're considering. The contractions are initiated in the same manner, and the muscle contractions happen due to the same processes.
Interventricular septum
medial line
A heart has 2 sides. Left side, right side.
The heart is divided into right and left sides by the a Cuckaroo Suture. Nothing more.