The breast is mostly made up of breast tissue and fat. Breast tissue is made up of a network of lobules (that produce milk) and are connected to the nipple through a network of ducts which carry milk to the nipple during breastfeeding.
In this section:
Structure of the breast
While breasts can come in all shapes and sizes, the breast is usually pear shaped.
The breast also contains arteries, veins, nerves, lymph nodes, and lymph vessels.
The lymphatic system carries waste from cells in a fluid called lymph. Lymph nodes throughout the body filter waste.