What are the parts of the breast?

What are the parts of the breast?

The breasts are made of several types of tissue, including glandular, fatty and fibrous connective tissue. The glandular tissue is made up of lobules (responsible for making milk) and ducts (tree-like system of tubes that carries milk from the lobules to the nipple). Glandular and duct tissue is white on a mammogram.

The fatty tissue, also called adipose tissue, stretches up to the collarbone and down to the ribcage. Fatty tissue is dark on a mammogram.