How does blood move through the heart?

Blood moves through the heart in a continuous loop, starting with the right atrium receiving deoxygenated blood from the body. The blood then flows into the right ventricle, which pumps it to the lungs to pick up oxygen. Oxygenated blood returns to the left atrium, then moves to the left ventricle, which pumps it out to the rest of the body. This cycle repeats with each heartbeat, ensuring that oxygen-rich blood reaches all parts of the body.