Which chamber of the heart receives oxygen-rich blood from the lungs?

The left atrium is the chamber of the heart responsible for receiving oxygen-rich blood coming from the lungs. This process occurs through the pulmonary veins, which carry the oxygenated blood back to the heart after it has been oxygenated in the lungs. Once the left atrium receives this blood, it then contracts to push the blood into the left ventricle.

The left ventricle, which is mentioned in the answer choices, is responsible for pumping this oxygen-rich blood out to the body through the aorta. However, it does not receive the blood directly from the lungs. The right atrium is the chamber that receives deoxygenated blood returning from the body through the superior and inferior vena cava. The right ventricle pumps this deoxygenated blood to the lungs for reoxygenation.

Understanding the flow of blood through the heart is crucial in grasping how the chambers function during the cardiac cycle. The left atrium plays a vital role in the circulation of oxygenated blood, ensuring that the body receives the oxygen it needs to function properly.