breast

Female milk-secreting glandular organ; it develops at puberty and increases in size during pregnancy.

areola

Pigmented surface surrounding the nipple.

lactiferous duct

Canal carrying milk secreted by the mammary gland to the nipple.

nipple

Cone-shaped or cylindrical erectile protuberance of the breast surrounded by the areola; the lactiferous ducts open into it.

mammary gland

Organ consisting of some 20 glands (lobes) ensuring secretion of milk.

adipose tissue

Fatty tissue surrounding the mammary gland and covering the pectoral muscles that support the breast.