Human milk comes from your mammary glands inside your breasts. These glands have several parts that work together to produce and secrete milk: Alveoli: These tiny, grape-like sacs produce and store milk. A cluster of alveoli is called lobules, and each lobule connects to a lobe.
Milk is most commonly obtained from mammals, such as cows, goats, and sheep. Milk can also be obtained from other animals, such as camels, yaks, and reindeer. In some regions, milk is also produced from plants, such as almonds, oats, and soybeans.