Anatomy of the Breasts
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Each breast has 15 to 20 sections, called lobes, that are arranged like the petals of a daisy.
Each lobe has many smaller lobules, which end in dozens of tiny bulbs that can produce milk.
The lobes, lobules, and bulbs are all linked by thin tubes called ducts.
These ducts lead to the nipple in the center of a dark area of skin called the areola.
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Fat fills the spaces between lobules and ducts.
There are no muscles in the breast, but muscles lie under each breast and cover the ribs.
Each breast also contains blood vessels and vessels that carry lymph. The lymph vessels lead to small bean-shaped organs called lymph nodes, clusters of which are found under the arm, above the collarbone, and in the chest, as well as in many other parts of the body.
Publication Source:
Devita, Hellman & Rosenberg's Cancer: Principles & Practice of Oncology, DeVita, Vincent T. 8th ed, 2008, p. 1606.
Online Source:
Breastcancer.org
http://www.breastcancer.org/pictures/breast_anatomy/
Online Source:
National Women's Health Information Center
http://www.womenshealth.gov/pub/2007daybook/breasts/2007Daybook_c04_breast.pdf
Online Medical Reviewer:
Akin, Louise RN, BSN
Online Medical Reviewer:
Foster, Sara RN MPH
Online Medical Reviewer:
Gaskin, Kelly RN, MSN, CPNP
Online Medical Reviewer:
Mitchell, Roberta RN, MSN, CPNP
Date Last Reviewed:
8/27/2009
Date Last Modified:
12/3/2008