The breast consists of a series of mammary glands that produce milk after birth, and which are called lobes and lobules. The lobes are connected by pipes, ducts, which are the leading milk to the nipple during lactation, to feed the baby.
The glands (or lobes) and the ducts are embedded in adipose tissue and connective tissue, which, together with the lymphoid tissue, forming the breast.
As a retaining wall, pectoral muscle acts which lies between the ribs and breast. The skin covers and protects the entire breast structure.
The lymphatic system consists of containers and vessels or tubes that contain and carry the lymph, a colorless liquid consisting of white blood cells, mostly lymphocytes. These cells recognize any substance foreign to the body and release substances that destroy the offending agent.