NUR 203 Chapter Notes - Chapter 17: Supernumerary Nipple, Lactiferous Duct, Connective Tissue
Document Summary
The female breast - lies against the anterior thoracic wall, extending from the 2nd rip down to the 6th rib, and from the sternum across to the midaxillary line. Overlies the pectoralis major and, at its inferior margin, the serratus anterior. Hormonally sensitive tissue, responsive to the changes of monthly menstrual cycles and aging. About 15-20 lactiferous ducts empty into a depression at the top of the nipple. Each duct leads from the alveoli within the breast called lobules, where milk is secreted. Along their length, the duct widens into areas that form reservoirs where milk can be stored. Fibrous connective tissue provides structural support in the form of fibrous bands or suspensory ligaments connected to both the skin and the underlying fascia. Adipose tissue surround the breast, predominantly in superficial and peripheral areas. After menopause, there is a decreased number of lobules noted, glandular tissue atrophies and is replaced with fat.
