Quite a few types of tissue kind the female breasts. Muscles link your breasts to the ribs. The a few differing kinds of breast tissue include: Close to two several years following the onset of puberty (a girl's initial menstrual cycle), estrogen and progress hormone promote the development and expansion https://grok.com/share/c2hhcmQtMw%3D%3D_21b4ddf4-c274-418a-a078-c9d2af4898ff