Breast

The breasts are two prominences located on the upper ventral region of the torso in 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

A bra, short for brassiere or brassière (, ), is a type of form-fitting underwear that is primarily used to support and cover a woman's breasts. A typical bra consists of a chest band that wraps around the torso, supporting two breast cups that are held in place by shoulder straps. A bra usually fastens in the back, using a hook and eye fastener, although bras are available in a large range of styles and sizes, including front-fastening and backless designs. Some bras are designed for specific functions, such as nursing bras to facilitate breastfeeding or sports bras to minimize discomfort dur

The nipple is a raised region of tissue on the surface of the breast from which, in lactating females, milk from the mammary gland leaves the body through the lactiferous ducts to nurse an infant. The milk can flow through the nipple passively, or it can be ejected by smooth muscle contractions that occur along with the ductal system. The nipple is surrounded by the areola, which is often a darker colour than the surrounding skin.

milk produced by the mammary glands in the breast of a human female

sex position in which a penis is stimulated by contact with female breasts and vice versa

thumb|upright|Topless woman at the 2008 Oregon Country Fair

thumb|250px|Udder of a Cattle|cow An udder is an organ formed of two or four mammary glands on the females of dairy animals and ruminants such as cattle, goats, and sheep. An udder is equivalent to the breast in primates and other mammals. The udder is a single mass hanging beneath the animal, consisting of pairs of mammary glands with protruding teats. In cattle, camels and deer, there are normally two pairs, in sheep and goats, there is one pair, and in some animals, there are many pairs. In animals with udders, the mammary glands develop on the milk line near the groin. Mammary glands that

full or partial exposure of the separation between a woman's breasts by clothing

thumb|Butoh dancer Kazuo Ohno thumb|Video of Mushimaru Fujieda Butoh workshop is a form of Japanese dance theatre that encompasses a diverse range of activities, techniques and motivations for dance, performance, or movement. Following World War II, butoh arose in 1959 through collaborations between its two key founders, Tatsumi Hijikata and Kazuo Ohno. The art form is known to "resist fixity" and is difficult to define; notably, founder Hijikata Tatsumi viewed the formalisation of butoh with "distress". Common features of the art form include playful and grotesque imagery, taboo topics, and

sexual interest focused on female breasts

sexual arousal by breastfeeding on a woman's breast

thumb|right|alt=A topless woman with dark hair and sunglasses, her left hand is holding protest sign with the text "Stand up" in capital red letter and "for topless equal rights" in smaller green capital letters.|A woman protesting for the right to go topless anywhere a man could. Venice Beach, California, 2011 Topfreedom is a cultural and political movement seeking changes in laws to allow women to be topless in public places where men are permitted to be barechested, as a form of gender equality. Specifically, the movement seeks the repeal or overturning of laws which restrict a woman's righ

pounding and massaging of a pubescent girl's breasts, using hard or heated objects, to try to make them stop developing or disappear

thumb|Woman's torso with her hands covering her nipples A handbra (also hand bra or hand-bra) is the practice of covering female nipples and areolae with hands or arms. It often is done in compliance with censors' guidelines, public authorities and community standards when female breasts are required to be covered in film or other media. If the arms are used instead of the hands the expression is arm bra. The use of long hair for this purpose is called a hair bra. Moreover, a handbra may also be used by women to cover their breasts to maintain their modesty, when they find themselves with thei

thumb|Argentine actress Laura Novoa wearing a top without a bra Bralessness is the state of not wearing a brassiere as part of a woman's underwear. Women may choose to not wear a bra due to discomfort, health-related issues, their cost, or for social and cultural reasons.

BDSM sexual activity

The process whose specific outcome is the progression of the mammary gland over time, from its formation to the mature structure.

gender equality protest by Raelian movement

traditional pastry from Catania, Italy

bouncing breasts in video games

Clothing that appears as breasts

sex toy

primate chest cleavage between the breasts

continuously expanding breast implant using polypropylene

response of the immune system to foreign materials in the human body

Boobquake was a series of worldwide rallies which took place on April 26, 2010, and served to protest news reports of controversial beliefs blaming women who dress immodestly for causing earthquakes. It was inspired by blogger Jey McCreight.

informal test to determine if a girl needs to wear a bra

thumb|205x205px|right|Bosom pad 1888

bondage technique which involves the tying of rope around a woman's breasts in a visually intricate and decorative pattern

herbal supplements claiming, without evidence, to enlarge breasts

Ductoscopy or mammary ductoscopy (also: breast duct endoscopy, galactoscopy) is a medical diagnostic procedure for viewing and collecting epithelial cells and other internal features of the milk ducts. It is capable of detecting smaller abnormalities than mammograms, MRI or ultrasound tests.