Which pathway is responsible for returning deoxygenated blood from the body to the heart?

The pathway responsible for returning deoxygenated blood from the body to the heart is the systemic venous circulation. Blood from the body's tissues is collected by veins, which converge into larger vessels, ultimately leading to the superior and inferior vena cavae. These large veins drain deoxygenated blood into the right atrium of the heart, where it is then directed to the right ventricle for pulmonary circulation to become oxygenated.