breast http://upload.wikimedia.org/wikipedia/commons/6/6e/Closeup_of_female_breast.jpg MESH:D001940 The upper ventral region of the torso of an organism. uberon GAID:33 UMLS:C0006141 UBERON:0000310 The breasts of a female primate's body contain the mammary glands, which secrete milk used to feed infants. Both men and women develop breasts from the same embryological tissues. However, at puberty female sex hormones, mainly estrogens, promote breast development, which does not happen with men. As a result women's breasts become more prominent than men's. galen:Breast mammary region OpenCyc:Mx4rvVjV7ZwpEbGdrcN5Y29ycA mamma NCIT:C12971 mammary part of chest FMA:9601 BTO:0000149 EV:0100124 CALOHA:TS-2083 external soft tissue zone