THE BREAST IS A GLAND MADE UP OF SEVERAL PARTS

LOBES There are about 20 lobes inside each breast, each with its own individual milk duct system.

ALVEOLI These are clusters of milk-producing cells found at the end of smaller ducts. During pregnancy the ducts and milk-producing cells grow and multiply.

MUSCLE CELLS These are found around the alveoli. Nerve tissue in the breast makes them sensitive to touch, allowing the baby’s sucking to stimulate the letdown reflex (movement of milk in the breast) as well as milk production.

LYMPH This is fluid that helps fight disease and infection. In the breast it helps remove any waste.

FATTY TISSUE This is connective tissue that protects the breast from injury and is mostly what affects the size of a woman’s breasts. Contrary to popular belief, breast size does not affect the amount or quality of milk that a woman makes.