And when the baby sucks on the nipple, the nerve essentially creates action, potentials electrical signals that propagate all the way to the hypothalamus. And the hypothalamus stimulates the posterior and anterior pituitary gland to basically release special hormones as we'll see in just a moment. And these hormones stimulate the process of lactation the production and the release of milk. Now, we also have these ligaments of Cooper. And the ligaments of Cooper are essentially these fibers, bands of connective tissue that connect the entire breast to the skin, that encloses the breast. And we also have this adipose tissue, the fat tissue shown in orange.