Which chamber of the heart receives blood from the lungs?

The upper left chamber of the heart, known as the left atrium, is responsible for receiving oxygenated blood from the lungs. This process occurs through the pulmonary veins, which carry the oxygen-rich blood back to the heart after it has been oxygenated in the lungs. By receiving this blood, the left atrium plays a crucial role in the circulatory system, allowing the oxygenated blood to be pumped into the left ventricle and then distributed throughout the body to supply tissues and organs with the oxygen they need. Understanding this function is fundamental in animal science, as it relates to how oxygen is delivered for metabolic processes in animals.