The adult breast contains 14--18 irregular lactiferous lobes that converge to the nipple through ducts 2.0--4.5 mm in diameter; the milk ducts (lactiferous ducts) are immediately surrounded with dense connective tissue that functions as a supporting framework.
The adult breast contains 14--18 irregular lactiferous lobes--4.5 mm in diameter. These 18 irregular lactiferous lobes converge to the nipple through ducts 2.0. The milk ducts (lactiferous ducts) are immediately surrounded with dense connective tissue that functions as a supporting framework.