Expand one's knowledge

Human breasts are located in the chest and appear in pairs. It is mainly composed of nipple, breast tissue, subcutaneous adipose tissue around gland, connective tissue and suspensory ligament of breast. Since puberty, human female breasts will gradually develop into large bulges under the interaction of estrogen and other important hormones. Mature female breasts can secrete milk through breast tissue to feed babies.

Human female breast development is also its secondary sexual characteristic. However, other primate females have less breast development than humans, which usually only occurs during pregnancy. From the developmental point of view, female breasts and male breasts are homologous. Androgen secreted by men can inhibit the development of mammary glands, so male breasts are much smaller than female breasts, which are usually considered as underdeveloped breasts, but nipples can still be observed from the appearance.

Subcutaneous fat wraps and covers breast tissue, shaping the size and shape of breast. The size and characteristics of breast are not necessarily related to its function of secreting milk. The activity of female breasts is mainly influenced by hormone regulation. During pregnancy and lactation, breast mainly secretes and stores breast milk under the complex action of estrogen, progesterone and prolactin.

Understanding the name, function and development process of breast is one of the important contents of comprehensive education. Learners should learn to use scientific names to describe breasts, understand the structure and development process of breasts, and accept their own bodies. At the same time, learn to seek medical advice in time when there is discomfort in the corresponding parts.

Breast structure

Breast is mainly composed of skin, adipose tissue, fibrous tissue and mammary gland. The branched mammary duct originates from the mammary gland and leads to the nipple. The breast is supported by pectoral muscles and ribs, and is connected with the chest through suspensory ligaments (inelastic thin strips).

Bra function

Bra is a kind of underwear, also called "bra", "bra" and "bra". The main purpose of a bra is to support and protect women's breasts. Modern bra design often considers a variety of functions. Some bras not only support breasts, but also have the function of increasing breast size and generating cleavage.

Some bras also have some specific uses, such as nursing bra, which is designed to help breast-feeding women to breastfeed conveniently. Although some people have medical needs for bras, most people wear bras for fashion and cultural reasons. There is no evidence that wearing a bra during non-exercise time can prevent sagging breasts.