breast 乳房 BTO:0000149 CALOHA:TS-2083 EV:0100124 FMA:9601 GAID:33 MESH:D001940 OpenCyc:Mx4rvVjV7ZwpEbGdrcN5Y29ycA 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. The upper ventral region of an animal's torso. UBERON:0000310 UMLS:C0006141 galen:Breast mamma mammary part of chest mammary region uberon 乳房 乳房区域 动物躯干的上腹侧区域。 胸部的乳房部分 雌性灵长类动物身体的乳房包括乳腺,其分泌用于喂养婴儿的乳汁。男性和女性从相同的胚胎学组织发育乳房。然而，在青春期，女性性激素（主要是雌激素）促进乳房发育，而男性不发生。结果女人的乳房变得比男人的更突出。 external soft tissue zone 外部软组织区域