So this is the brief structure, the brief anatomy of the human female breast. Now let's move on to the function of the female human breast. Well, the primary function of the female breast is to basically produce milk via process known as lactation as we'll discuss in just a moment. And the purpose of the milk is to basically provide that child with the nourishment that the child needs to basically grow and develop into a fully functional individual and the milk is also used to boost to increase the immunity of that child as we'll see in just a moment. So during the process of pregnancy when that woman is carrying that fetus and the fetus is undergoing different types of developmental processes, that woman is actually releasing estrogen as well as progesterone. So initially these two hormones are released by the corpus luteum found in the ovary but eventually the placenta takes over this job and begins to release estrogen and progesterone.