Your heart has 4 chambers. The upper chambers are called the left and right atria and the lower chambers are called the left and right ventricles. A wall of muscle called the septum separates the left and right atria and the left and right ventricles.

What divides the heart into right and left?

It is divided into the left and right side by a muscular wall called the septum. The right and left sides of the heart are further divided into: Two atria - top chambers, which receive blood from the veins and. Two ventricles - bottom chambers, which pump blood into the arteries.

How many separate chambers does the heart have?

The heart has four chambers: two atria and two ventricles. The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle. The right ventricle pumps the oxygen-poor blood to the lungs.