breast

Construction and location of the breast

A woman has two breasts (mammary glands in Latin). These are located in the muscle, which is located on your ribs and intercostal muscles. The two breasts may vary from each other in size and shape. The breasts grow in puberty, under the influence of hormones. They are a secondary sex characteristic of women. Also, men have breasts, but not develop.

Breasts contain milk glands, fat, connective tissue, blood vessels and lymph vessels and have an offshoot of breast tissue in the armpit . A mammary gland consists of melklobjes with milk-producing cells. Each has a mammary gland milk duct, and it flows into the nipple. Each breast has one nipple surrounded by areola (areola). The areola can vary in color from light pink to dark brown.

Function of breasts

Breasts make breastfeeding and play a role in sexual arousal.

The nipples containing many blood vessels and nerve endings, which play a role in sexual arousal and breast-feeding. In cold weather or sexual excitement, the nipples are hard.

Operation of the breasts

After ovulation, progesterone causes an increase in the glandular tissue in the breasts. There's more blood to breasts in preparation for a possible pregnancy. This can cause breast pain during menstruation or pregnancy.

The mammary glands are the main function of feeding the baby with milk The milk is prepared during the pregnancy by the hormone prolactin.  the milk flows from the milk glands through the milk ducts to the nipple. When the mother hears her baby cry, the hormone oxytocin is released. This squeezing muscle cells around the milk glands to contract, causing the milk in the milk ducts.

The connective tissue in the chest provides strength and the amount of adipose tissue determines the size of the breast. In addition, protecting the connective and adipose tissue and the blood vessels in the breast milk glands.

Problems with breasts

Breast cancer is the most dangerous disease of the breast. In breast cancer grows a malignant tumor in 1 breast. Breast cancer is common cancer between women, but it also occurs in men.