Anatomy of the Breast
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| Click to Enlarge: Anatomy of Breast Tissue, Front View |
The breast is divided into about 20 sections called lobes. Each lobe has groups of tiny bulbs called lobules. These lobules produce milk. Thin tubes called ducts start from the lobes and, forming a pattern like the branches of a tree, carry the milk to the nipple, which is in the center of the areola. The areola is the dark area of skin around the nipple. Fat surrounds the lobules and ducts. Although no muscles are found in the breast, muscles are located over the ribs under each breast.
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| Click to Enlarge: Anatomy of Breast Tissue, Side View |
The breast contains blood vessels as well as other vessels that carry a clear fluid called lymph. These lymph vessels lead to small, bean-shaped organs called lymph nodes. Lymph nodes are part of the body’s immune system. Groups of lymph nodes are located near the breast and in the armpit, called the axilla. Lymph nodes are also found above the collarbone and in the chest, as well as in many other parts of the body.
Online Editor:
Joann Eudes RN MS
Online Medical Reviewer:
Gemignani, Mary L. MD
Online Medical Reviewer:
Kim Stump-SutliffKim Stump-Sutliff RN MSN AOCNS
Date Last Reviewed:
4/14/2008
Date Last Modified:
9/22/2008