The breast will not contain muscles. Breast tissue is found on top of the muscles in the chest wall. Blood vessels and lymphatic vessels (a program of vessels that drains fluid) are located through the entire breast. Breast tissue starts to sort from the fourth week of fetal existence. During https://grok.com/share/c2hhcmQtMw%3D%3D_21b4ddf4-c274-418a-a078-c9d2af4898ff