ANATOMICAL TRAVELOGUE / SCIENCE PHOTO LIBRARY ANATOMICAL TRAVELOGUE / SCIENCE PHOTO LIBRARY
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Female mammary glands, which provide nourishing milk to a newborn baby. Internally, the mammary gland consists of up to twenty-five lobes which radiate around and open to the nipple. The lobes are separated from each other by fat and connective tissue. Within the lobes are smaller lobules, which are made up of alveoli that produce milk during lactation. The alveolar glands pass the milk through lactiferous ducts which open to the nipple.
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