This lesson includes graphics demonstrating the lobular organization of mammary tissue.
Mammary tissue is arranged in large lobes, each containing many lobules.
Lobules are groups of alveoli and are more easily seen at lower magnifications of the tissue sections. Each lobule if surrounded by a connective tissue sheath. An even lower magnification shows this same lobule and several others. There are 6 lobules present in this image. Note the thick connective tissue sheath separating the various lobules.