ANATOMY

Detailed explanation-1: -Muscular walls, called septa or septum, divide the heart into two sides. On the right side of the heart, the right atrium and ventricle work to pump oxygen-poor blood to the lungs.

Detailed explanation-2: -On the right side of the heart, the right atrium and right ventricle work to pump oxygen-poor blood returning from the body back to the lungs to be reoxygenated. On the left side of the heart, the left atrium and left ventricle combine to pump oxygenated blood back through the body.

Detailed explanation-3: -The right and left sides of the heart are separated by a muscular wall that prevents blood without oxygen from mixing with blood that has oxygen. The heart also has valves that separate the chambers and connect to major blood vessels.

Detailed explanation-4: -Your chambers’ walls are made of muscles that allow your heart to contract and form a heartbeat. The right and left sides of your heart are separated by a wall of tissue called your septum.