The key parts of the female breast include:. At the onset of puberty, female reproductive hormones — particularly estrogen —guide breast growth. Normal changes in the breast during pregnancy can include firming, enlarged nipples, darker nipples, and stretch marks on the skin due to enlargement.
Breast development is a vital part of puberty in females. Changes also occur to the breasts during menstruation and when a woman reaches menopause. This is when a thickening in the chest area called the mammary ridge or milk line develops.
Puberty typically isn't a favorite memory for any of us. During that angst-ridden ride between childhood and adulthood, nearly everyone's best goal is simply to fit in. That's even tougher when you're only in second grade.
In certain conditions, some girls start way earlier or way later than that. But for girls with a normal growth and development curve, puberty will start during their middle school or high school years. During puberty, there is a natural increase in the hormone estrogen in the body.
Breasts are secondary sex characteristics, which are features that distinguish the sexes but are not directly related to reproduction. Most women think of them as a key component of their sexual selves, and self-image is often affected by reactions to their size and shape. Breasts come in all sizes and shapes: large, small, firm, lumpy.
There is very little actual breast tissue present at birth, although a few days after birth it is not at all unusual for babies to produce what is referred to as 'witches milk' from their nipples. This is said to be caused by the strong influence of the mother's hormones just before delivery, and then the milk is not present again until other conditions later in life cause lactation to start up. Females reach a certain time during which their breasts begin to develop further.
Puberty can be a difficult and emotional process for young girls, but understanding the stages may help them get through the experience. A British physician named James Tanner came up with five distinctive stages of pubertyknown as the Tanner Scale or Tanner Stagesto help doctors and parents recognize which part of the process children are going through. The first stage of puberty has no visible signs for most girls. The work is done internally as hormones are produced and the ovaries begin to grow.