Both females and males have mammary glands. In females these are much larger and developed than in males and produce milk at childbirth. Each breast contains 15-20 lobes of compound areolar glands, each lobes resembling a bunch of grapes on a long stalk. the cells of the glands secrete milk, which flows along merging lactiferous ducts towards the nipple. the breast also contains a widespread drainage system of lymph vessels.
Structure of Mammary gland 10.08: