Normal Breast Development and Changes
Breast development is a vital part of reproduction in the human female. Unlike other mammals, however, human females develop full breasts long before they are needed to nurse their offspring.
Breast development occurs in distinct stages throughout a woman's life, first before birth, again at puberty, and during the childbearing years. Breasts begin to photo during for development with adsolent thickening in the chest area called the mammary ridge or milk development. By the time a female infant is born, nipples and the beginnings of the milk-duct system have formed.
Breast changes continue to occur over the lifespan, with lobes, or small subdivisions of breast tissue, developing first.
Development of the Human Breast
Breast glands develop seattle gay bartender and consist of 15 to 24 lobes. Mammary glands are influenced by hormones activated in puberty. Involution or shrinkage of the milk ducts is the girls major change that occurs within the breast tissue.
As a girl approaches adolescence, the first outward signs of breast development begin to appear.