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A possible mechanism of the negative regulatory effects of the VDR on breast development may be indicated by a study of vitamin D 3 supplementation in women which found that vitamin D 3 suppresses cyclooxygenase-2 (COX-2) expression in the breast, and by doing so, reduces and increases, respectively, the levels of prostaglandin E 2 (PGE 2) and ...
For pubescent girls in thelarche (the breast-development stage), the female sex hormones (principally estrogens) in conjunction with growth hormone promote the sprouting, growth, and development of the breasts. During this time, the mammary glands grow in size and volume and begin resting on the chest. These development stages of secondary sex ...
The Tanner scale (also known as the Tanner stages or sexual maturity rating (SMR)) is a scale of physical development as pre-pubescent children transition into adolescence, and then adulthood. The scale defines physical measurements of development based on external primary and secondary sex characteristics , such as the size of the breasts ...
Two Tahitian Women (1899) by Paul Gauguin. The word "topless" usually refers to a woman whose breasts, including her areolas and nipples, are exposed to public view. It can describe a woman who appears, poses, or performs with her breasts exposed, such as a "topless model" or "topless dancer", or to an activity undertaken while not wearing a top, such as "topless sunbathing".
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In the United States, individual states have primary jurisdiction in matters of public morality.The topfreedom movement has claimed success in a few instances in persuading some state and federal courts to overturn some state laws on the basis of sex discrimination or equal protection, arguing that a woman should be free to expose her chest (i.e., be topless) in any context in which a man can ...
Thelarche, also known as breast budding, is the onset of secondary breast development, often representing the beginning of pubertal development. [1] It is the stage at which male and female breasts differentiate due to variance in hormone levels; however, some males have a condition in which they develop breasts, termed gynecomastia .
The mammary ridge is primordial for the mammary glands on the chest in humans, and is associated with mammary gland and breast development.. In human embryogenesis, the mammary ridge usually appears as a narrow, microscopic ectodermal thickening during the first seven weeks of pregnancy and grows caudally as a narrow, linear ridge. [1]