Share to: The veins return blood from the body back to the heart, then out of the heart to the lungs where it is oxygenated, then back to the heart and carried back out into the body by … arteries.The blood in the veins is blue but is seen through you skin as a dark green.1 person found this useful.hare to: The veins return blood from the body back to the heart, then out of the heart to the lungs where it is oxygenated, then back to the heart and carried back out into the body by … arteries.