Breast of a woman and men is the tissue overlying the chest muscles. Women’s breasts are made of specialized tissue that produces milk which called a (glandular tissue) as well as fatty tissue. The amount of fat in the breast determines the size of the breast.
The milk producing part of the breast is organized into 15 to 20 sections and it called lobes. Within each lobe are smaller structures which called lobules, where milk is produced. The milk travels through a network of tiny tubes which known as ducts. The ducts connect and come together into larger ducts, which eventually exit the skin on the nipple and the dark area of skin surrounding the nipple is called the (areola).
Connective tissue and ligaments provide support to the breast tissues and give it its shape. Nerves provide sensation to the breast tissue. The breast also contains blood vessels, lymph vessels, and lymph nodes.
Breast of man (Gynecomastia)
Gynecomastia is triggered by a decrease in the amount of the hormone which known as testosterone hormone compared with estrogen. The cause of this decrease can be conditions that block the effects of or reduce testosterone hormone or a condition that increases your estrogen level. Several things can upset the hormone balance, including the following.
Natural hormone changes
The hormones testosterone and estrogen control the development and maintenance of sex characteristics in both men and women. Testosterone controls male traits, such as muscle mass and body hair. Estrogen controls female traits, including the growth of breasts.
Most men and women think of estrogen as an exclusively female hormone, but also men produce female hormone though normally in small quantities. However, male estrogen levels that are too high or are out of balance with testosterone levels can cause gynecomastia.