Answer:
Vena Cava/ right atrium
Explanation:
Blood from all parts of the body except the lungs is deoxygenated blood.
Deoxygenated blood enter the right atrium of the heart through vena cava.
Deoxygenated blood from body → vena cava → right atrium → right ventricle → pulmonary artery → lungs → oxygenated blood from lungs → pulmonary vein → left atrium → left ventricle → aorta → body
