The breast is a heap of glandular, fatty and fibrous tissue located over the pectoralis muscles of the chest wall and emotionally involved to these muscles by fibrous strands (Cooper’s ligaments). The breast itself has no muscle tissue, which is why movements will not build up the breasts. A layer of fat surroundings the breast glands and extends all through the breast. This fatty tissue gives the breast a soft steadiness and gentle, flowing contour. The actual breast is self-possessed of fat, glands with the capacity for milk production when enthused by special hormones, blood vessels, milk ducts to transfer the milk from the glands to the nipples and sensory nerves that give emotion to the breast. These nerves make bigger upward from the muscle layer through the breast and are highly sensitive, particularly in the regions of the nipple and areola, which financial records for the sexual receptiveness of some women’s breasts.
Because the breast is made up of tissues with dissimilar textures, it may not have a smooth surface and often feels lumpy. This irregularity is in particular noticeable when a woman is thin and has little breast fat to soften the contour; it becomes less understandable after menopause, when the cyclic change and endocrine stimulation of the breast have cease and the glandular tissue softens. Estrogen supplement after menopause can cause sustained lumpiness. The breast glands drain into a collect system of ducts that go to the base of the nipple. The ducts then make bigger through the nipple and open on its outer surface. In adding to serving as a channel for milk, these ducts are often the foundation of breast problems
The ducts end in the nipple, (which projects from the surface of the breast), and are a means of expression for the milk secreted by the glands and suckled by a baby throughout breast-feeding. There is substantial variation in women’s nipples. In some, the nipple is constantly erect; in others, it only becomes erect when enthused by cold, physical get in touch with or sexual activity. Still other women have upturned nipples.
Surrounding the nipple is a somewhat raised circle of pigmented skin called the areola. The nipple and areola contain particular muscle fibers that make the nipple upright and give the areola its firm texture. The areola also contains Montgomery’s glands, which may appear as small, raise lumps on the surface of the areola. These glands lubricate the areola and are not symptoms of an uncharacteristic situation.
Beneath the breast is a large muscle, the pectoralis major, which assist in arm movement; the breast rests on this muscle. originate on the chest wall, the pectoralis major extends from deep beneath the breast to attach to the upper arm. It also helps form the axillary fold, shaped where the arm and chest wall meet. The axilla (armpit) is the depression at the back this fold.
Each woman’s breasts are shaped in a different way. Individual breast look is influenced by the volume of a woman’s breast tissue and fat, her age, a history of preceding pregnancies and lactation, her heredity, the eminence and elasticity of her breast skin and the power of hormones.
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