How is breast milk formed?
The breasts contain many glands which make milk. They collect nutrients and liquid from the mother’s blood and make them into milk. The milk then travels to ducts which help store the milk. The ducts are behind the brown part of the nipple and each duct has a connection to the nipple. When the nipple is stimulated by sucking (or suction), hormones are released in the mother’s brain which help bring the milk to the nipple, called “let down”.