Anatomy - Boobies

Question 1

Between what ribs is the bed of breast found?

Answer 1

2-6

Question 2

What is the name of the fatty extension of breast tissue that goes into the axilla?

Answer 2

Axillary tail of Spence

Question 3

How can boobs move separate to the muscle underneath?

Answer 3

Between breast tissue and fascia = rectomammary space

Attached to skin via suspensory ligaments

Question 4

Women have a mixture of non-lactating and lactating lobules in the breast tissue. T/F?

Answer 4

F - non-lactating unless at end of pregnancy/breastfeeding -> lactating lobules

Question 5

There is one hole at the areola where milk comes from. T/F?

Answer 5

F - multiple openings from the lactiferous ducts

Question 6

The majority of the breast lymph drains to the ipsilateral axillary lymph nodes. Where does it drain after the axillary?

The upper inner and lower inner can drain to where else?

Answer 6

Axillary -> supraclavicular

Upper inner - parasternal
Lower inner - abdominal

Question 7

Levels of the axillary lymph nodes are used to describe the extend of axillary node clearance.

What muscle is used to define the borders of these levels?
Describe where you would find:
Level 1
Level 2
Level 3

Answer 7

Pectoralis minor

Level 1 - inferior and lateral
Level 2 - deep
Level 3 - superior and medial

Question 8

What are the two main arterial supplies of the breast?

Answer 8

Lateral mammary from lateral thoracic from subclavian

Medial mammary from internal thoracic

(also posterior intercostals -> lateral mammary)