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The anatomy of the breast is somewhat complex: the breast sits on the chest muscles and is made up of lobes, lobules, and ducts. The lymph vessels in each breast lead to the lymph nodes found near the breast in the axilla, above the collar bone, and in the chest.
Breast Anatomy: Lobes and DuctsThe breasts sit on the chest muscles, which cover the ribs. The breast itself is made up of lobes and ducts.
Each breast has 15 to 20 sections called lobes, which have many smaller sections called lobules. Lobules end in dozens of tiny bulbs that can produce milk. The lobes, lobules, and bulbs are linked by thin tubes called ducts.
Milk flows from the lobules through these ducts to the nipple. The nipple is in the center of a dark area of skin called the areola. Fat fills the spaces between the lobules and the ducts.