WAEC - Biology (1988 - No. 6)

deoxygenated blood from the right ventricles to the lungs

oxygenated blood from the right ventricle to the lungs

oxygenated blood from the left ventricles to the ventricles to the right auricle

deoxygenated blood from the left ventricles to the right auricles

oxygenated blood from the lings to the right auricles