In each breast, 4–18 lactiferous ducts drain to the nipple; the glands-to-fat ratio is 2:1 in lactating women, and to 1:1 in non-lactating women; besides milk glands, the breast is composed of connective tissue (collagen, elastin), adipose tissue (white fat), and the suspensory Coopers ligaments. The peripheral nervous system innervation of the breast is by the anterior and lateral cutaneous branches of the fourth-, fifth-, and sixth intercostal nerves, while the Thoracic spinal nerve 4 (T4) innervating the dermatomic area supplies sensation to the nipple-areola complex. As a mammary gland, the breast is an inhomogeneous structure composed of layers of different types of tissue; among which predominate two (2) types: (i) adipose tissue and (ii) glandular tissue; the last supports the lactation functions of the breasts. Anatomically, the mammary gland is a cone with the base at the chest wall, and the apex at the nipple. The superficial layer (superficial fascia) is separated from the skin by 0.5–2.5 cm of subcutaneous fat (adipose tissue). The suspensory ligaments (Coopers ligaments) are prolongations of fibrous tissue that radiate from the superficial fascia to the skin. The glandular tissue of the breast is biochemically supported with estrogen; thus, when a woman reaches menopause and her estrogen levels decrease, the glandular tissue then atrophies, withers, and disappears, leaving a breast composed only of fat (adipose tissue), superficial fascia, the suspensory ligaments, and the skin envelope. Interested, Pls call for more information WeChat : Christine CSH WhatsApps / sms : 011-2366 9319 Or Visit my page & press a 《 like 》 for my page CSH Rich Come True https://facebook/pages/CSH-Rich-Come-True/439759769496614?fref=ts
Posted on: Sun, 30 Nov 2014 13:01:25 +0000
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