Ventricle

The ventricles are the larger chambers of the heart. They have a thick muscular wall as they are designed to pump blood out of the heart.

The right ventricle pumps the blood to the lungs to be filled with oxygen. Once the blood returns to the heart it is passed via the left atrium into the left ventricle, where it is pumped out to the rest of the body. The left ventricle has a thicker muscular wall than the right ventricle, as it pumps the blood around the body- a much longer distance.