1 / 19

Breast anatomy

Breast anatomy. What area does the base of the breast cover?. Extends from lateral border of sternum to midaxillary line From 2 nd to 6 th ribs Small part may extend towards the axilla – the axillary tail. What two muscles does the breast overly?. Pectoralis major Serratus anterior.

minor
Download Presentation

Breast anatomy

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Breast anatomy

  2. What area does the base of the breast cover? • Extends from lateral border of sternum to midaxillary line • From 2nd to 6th ribs • Small part may extend towards the axilla – the axillary tail

  3. What two muscles does the breast overly? • Pectoralis major • Serratus anterior

  4. What separates the breast from the underlying muscle? • Retromammary space • A potential space filled with loose connective tissue

  5. How is the breast attached to the skin that overlies it? • Suspensory ligaments of Cooper • Helps support the lobules of the breast

  6. On what line does the nipple lie? • Mammary ridge/milk line • From the anterior axillary fold to the groin • Supernumerary nipples can be occur along this line • Also axillary breasts

  7. How is the breast divided for descriptive purposes? • Quadrants

  8. What glands are found on the areola? • Sebaceous (Montgomery) glands • Secrete oily substance following pregnancy • Oily substance protects the nipple from irritation

  9. How many lobules are in the breast? How are they separated? • 15-20 lobules of glandular tissue • Separated by suspensory ligaments of Cooper

  10. Describe the drainage of milk from a lobule? • Each lobule drains into a lactiferous duct • Each lactiferous duct opens on the nipple

  11. What arteries supply the breast? • Medial mammary – From internal thoracic (mammary)/anterior intercostal • Lateral mammary – From lateral thoracic artery & posterior intercostals

  12. What is the nerve supply to the breast? • T4-6 intercostal nerves

  13. What different areas do the lymphatics of the breast drain to? Auxiliary nodes Contralateral parasternal nodes Parasternal nodes Interpectoral (rotter’s) nodes Contralateral breast Subdiaphragmatic/hepatic nodes Inguinal lymph nodes (rare)

  14. What changes does the breast go through during pregnancy? (6) • Lengthening and branching of ducts • Development of secretory alveoli • Vascularity increases • Nipples enlarge • Areola becomes more prominent • Lobular structure more prominent

  15. What effect do progesterone and oestrogen have on breast tissue? • Progesterone – lobular development (growth) • Oestrogen – ductal growth • Combined – suppress lactation

  16. Benefits of breast feeding • Bonding • Infection • Cheap • Convenient • Sterile

  17. Who should not breast feed • Alcohol misuse • Certain drugs-methotrexate, cyclosporine, lithium • Active TB • HIV • Breast Cancer Rx • Infant with galactosemia

  18. Difficulties with Breast feeding • 2/3 of women have some problem • Cracked nipple • Mastitis • S. Aureus • Preemie • Need advice and support

More Related