Via the blood system and eventually reaches the muscle layer of this particular diagram. So when the muscle layer receives the oxytocin, what the oxytocin does is it stimulates the muscle layer to actually contract. And by contracting what the muscle layer does is it forces that milk. It squeezes that milk out of the cells and into these milk ducts. And then the milk travels via the ducts, through the tiny holes in the nipple and eventually into the mouth of that baby. So this is how lactation actually takes place.