In the milk-producing breast,ends of small ducts expand to form secretory sacs called

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The expansion of small ducts in the milk-producing breast forms secretory sacs called alveoli, which produce and store milk until it is released through the ducts during breastfeeding. Lobules and lobes are structures composed of multiple alveoli, while the areola and areolar glands are involved in nipple and skin lubrication but not milk production.

In the Milk-Producing Breast,ends of Small Ducts Expand to Form