Some religions ascribe a special status to the female breast, either in formal teachings or through symbolism. The tissue composition ratios of the breast also vary among women. The areola has many sebaceous glands, and the skin color varies from pink to dark brown. They give the breast its offspring-feeding functions as a mammary gland. At the sides of the chest, the breast tissue can extend into the axilla armpit , and can reach as far to the back as the latissimus dorsi muscle , extending from the lower back to the humerus bone the longest bone of the upper arm.
The chest thoracic cavity progressively slopes outwards from the thoracic inlet atop the breastbone and above to the lowest ribs that support the breasts. The size of the breasts can also increase and decrease in response to weight fluctuations. Some religions ascribe a special status to the female breast, either in formal teachings or through symbolism. Breast development The breasts are principally composed of adipose, glandular , and connective tissues. In these cases, it seems that sensation from the nipples travels to the same part of the brain as sensations from the vagina, clitoris and cervix. The axillary lymph nodes include the pectoral chest , subscapular under the scapula , and humeral humerus-bone area lymph-node groups, which drain to the central axillary lymph nodes and to the apical axillary lymph nodes. Mammoplasia breast enlargement in girls begins at puberty, unlike all other primates in which breasts enlarge only during lactation. Aphrodite , the goddess of love, was more frequently portrayed fully nude, though in postures that were intended to portray shyness or modesty, a portrayal that has been compared to modern pin ups by historian Marilyn Yalom. Milk exits the breast through the nipple, which is surrounded by a pigmented area of skin called the areola. When the breasts are stimulated by the suckling of her baby, the mother's brain secretes oxytocin. The size of the areola can vary widely among women. The areola contains modified sweat glands known as Montgomery's glands. Society and culture General In Christian iconography , some works of art depict women with their breasts in their hands or on a platter, signifying that they died as a martyr by having their breasts severed; one example of this is Saint Agatha of Sicily. Approximately two years after the onset of puberty a girl's first menstrual cycle , estrogen and growth hormone stimulate the development and growth of the glandular fat and suspensory tissues that compose the breast. Breast size and other characteristics do not predict the fat-to-milk-gland ratio or the potential for the woman to nurse an infant. In boys and men, abnormal breast development is manifested as gynecomastia , the consequence of a biochemical imbalance between the normal levels of estrogen and testosterone in the male body. As a mammary gland , the breast is composed of differing layers of tissue , predominantly two types: During a woman's life, her breasts change size, shape, and weight due to hormonal changes during puberty , the menstrual cycle , pregnancy, breastfeeding, and menopause. Brassiere , Cleavage breasts , Toplessness , Modesty , Naturism , and Exhibitionism As is customary in her culture, a bare-breasted Himba woman of northern Namibia wears a traditional headdress and skirt Because breasts are mostly fatty tissue, their shape can -within limits- be molded by clothing, such as foundation garments. Figures of the Phoenician goddess Astarte were represented as pillars studded with breasts. Breast tenderness during pregnancy is common, especially during the first trimester. However, milk production is blocked by the hormones progesterone and estrogen until after delivery, when progesterone and estrogen levels plummet. The areola has many sebaceous glands, and the skin color varies from pink to dark brown. In addition to the milk glands, the breast is also composed of connective tissues collagen , elastin , white fat, and the suspensory Cooper's ligaments. The breast is positioned, affixed to, and supported upon the chest wall, while its shape is established and maintained by the skin envelope.
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What Are Breasts Really For?
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