RT Book, Section A1 Karam, Amer A2 DeCherney, Alan H. A2 Nathan, Lauren A2 Laufer, Neri A2 Roman, Ashley S. SR Print(0) ID 1159952112 T1 The Breast T2 CURRENT Diagnosis & Treatment: Obstetrics & Gynecology, 12e YR 2019 FD 2019 PB McGraw-Hill Education PP New York, NY SN 9780071833905 LK obgyn.mhmedical.com/content.aspx?aid=1159952112 RD 2024/10/10 AB The breasts are secondary reproductive glands of ectodermal origin. They are frequently referred to as modified sweat glands. Each breast lies on the superior aspect of the chest wall. In women, the breasts are the organs of lactation, whereas in men, the breasts are normally functionless and undeveloped.