Which side of the heart is filled with deoxygenated blood?

The right side of the heart is responsible for receiving deoxygenated blood from the body and pumping it to the lungs for oxygenation. Blood that has circulated through the body returns to the heart through the superior and inferior vena cavae and enters the right atrium. From there, it moves into the right ventricle, where it is then sent to the lungs via the pulmonary arteries. In the lungs, carbon dioxide is released and oxygen is absorbed, resulting in oxygenated blood that then returns to the left side of the heart for distribution to the rest of the body. This distinct separation of oxygenated and deoxygenated blood is crucial for efficient circulation and gas exchange in the body. Understanding this separation is foundational for grasping the physiological processes involved in dental anesthesia and other medical practices.