Breast
The breasts are two prominences located on the upper ventral region of the torso among humans and other primates. Both sexes develop breasts from the same embryological tissues. The relative size and development of the breasts is a major secondary sex distinction between females and males. There is also considerable variation in size between individuals. Permanent breast growth during puberty is caused by estrogens in conjunction with the growth hormone. Female humans are the only mammals that permanently develop breasts at puberty; all other mammals develop their mammary tissue during the latter period of pregnancy.
Read Full WikiDEFINITIONS
- nounEither of the two organs on the front of a female human's chest, which contain the mammary glands; also the analogous organs in males.
- nounThe chest, or front of the human thorax.
- verbTo push against with the breast; to meet full on, oppose, face.
- verbTo reach the top (of a hill).
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