Breasts are glands consisting of connective and fatty tissues supporting and protecting the breast milk producing areas of the breast. Breast milk is produced in small clusters of cells called alveoli. Breast milk travels down milk ducts to the milk sinuses. Milk sinuses act as a breast milk collection reservoir. Breast milk sinuses are located behind the areola, the pigmented area around your nipple.
Breastfeeding success has nothing to do with breast size, nipple size or nipple type. Breast size is an inherited trait and determined by the number of fat cells. Breasts will enlarge with pregnancy and breastfeeding. Breastfeeding is a supply and demand process. The more you nurse the more breast milk you produce!