What anatomical features are involved in milk production in the breast?

The anatomical features primarily involved in milk production in the breast are the lobules and ducts. The lobules, which are the milk-producing glands, are composed of clusters of alveoli that manufacture milk in response to hormonal stimulation, particularly during pregnancy and lactation. Once the milk is produced in the lobules, it is transported through the ducts, which are tube-like structures that carry the milk from the lobules to the nipple for breastfeeding.

Fatty tissue provides support and shape to the breast but does not play a direct role in the production of milk. Skin and muscle are also essential for the overall structure and function of the breast, but they do not participate in milk production. Blood vessels and nerves are critical for overall breast health and function, supplying nutrients and signaling, yet they do not directly contribute to the production of milk. Thus, the lobules and ducts are the key components in the milk production process.