The breasts are specialized accessory glands of the skin that secrete milk. They are present in both sexes. Inmales and immature females, they are similar in structure. The nipples are small and surrounded by a colored area of skin called the areola.
The breast tissue consists of a system of ducts embedded in connective tissue that does not extend beyond the margin of the areola.
The breasts, consisting of secretory glands, superficial fascia, and overlying skin, are in the pectoral region on each side of the anterior thoracic wall.
Vessels, lymphatics, and nerves associated with the breast are as:
branches from the internal thoracic arteries and veins perforate the anterior chest wall on each side of the sternum to supply anterior aspects of the thoracic wall. Those branches associated mainly with the second to fourth intercostal