Ch 17. Breast And Regional Lymphatics

Front 1

Location of breast on the chest wall

Back 1

* The breast lie anterior to the pectoralis major and serratus anterior muscles.
* located between the second and 6th ribs, extending from the side of the sternum to the mid-axillary line.

Front 2

Axillary Tail of Spence

Back 2

*Superficial lateral corner of breast tissue.
* projects up and laterally into the axilla.

Front 3

Nipple and Areola

Back 3

Nipple: just below the center of the breast. Rough,round, and usually protuberant

Areola: Montgomery glands: small elevated sebaceous in the areola. Secrete protective pipid material during lactation.
* Smooth muscle fibers that cause nipple erection when stimulated

Front 4

Composition of Breast

Back 4

1) gladular tissue
2)fibrous tissue (Inc. suspensory ligaments)
3)adipose tissue

Front 5

Gladular Tissue

Back 5

Lobes,lobules,and alveoli: gladular tissue contains 20 lobes radiating from the nipple. Within each lubule are clusters of alveoli that produce milk. Each lobe empties into a lactiferous duct

Front 6

Glandular Tissue Continued

Fibrous Tissue

Back 6

Suspensory ligaments or Cooper's Ligamnets: fibrous bands extending vertically from the surface to attach on chest wall muscles.
* Support the breast tissue
* in breast cancer they become contracted, producing pits or dimples in the overlying skin.

Front 7

Adipose Tissue

Back 7

* Lobes embodied in adipose tissue
*subcutaneoud and retromammary fat
*provide for bulk of the breast

Front 8

4 quadrants of the breast

Back 8

*upper inner quadrant
*upper outer quadrant (site of most breast cancers)
*lower inner quadrant
*lower outer quadrant