Normal Anatomy of the Breast

Question 1

what is important about the breast

Answer 1

secondary sexual feature of females
source of nutrition for neonates
possible site of malignant change

Question 2

what are general features of the breast

Answer 2

highly specialised sweat glands
no special capsule or sheath
both Male and females have them

Question 3

what is the location of the breast

Answer 3

2nd/3rd rib to 6th rib 
lies deep in pectoral fasciae 
2/3 of breast over pec major 
1/3 over seraatus anterior 
firmly attached the dermis by ligament of Cooper

Question 4

what is the breast structure

Answer 4

nipple is an erectile structure

Question 5

what is the nopple

Answer 5

prominence of the breast

contains dense

Question 6

what is the areola

Answer 6

pigmented area around the nipple

Question 7

how many lobules does each breast contain

Answer 7

15-20 lobules of granular tissue

Question 8

what is the lactiferous duct

Answer 8

each lobule is drained by a lactiferous duct which opens independently not he nipple

Question 9

what is the lactiferous sinys

Answer 9

each dilated portion of the lobule

Question 10

what are the 4 quadrants of the breast

Answer 10

superomedial quadrant
superolateral quadrant
inferiolateral quadrant
inferiomedical quadrant

Question 11

what is the structure of the male breast

Answer 11

formed by small ducts without lobules or alveoli
little supporting fibroadipose tissue
temporary enlargement in new born

Question 12

what is the development of the breast

Answer 12

mammary crests or ridges appear during 4th week

extend from axillary region

Question 13

what is gyaecomastia

Answer 13

postnatal development of rudimentary lactiferous ducts in males

Question 14

what is polymastia

Answer 14

an extra breast

Question 15

what is pluthelia

Answer 15

an extra nipple

Question 16

what is athelia

Answer 16

absence of a nipple

Question 17

what is the blood supply to the breast

Answer 17

branches of axillary artery, internal thoracic and intercostal arteries

Question 18

what is the nerve supply of the breast

Answer 18

anterior and lateral cuteanous branches of 4-6th intercostal nerves
convey sensory
sympathetic fibres to blood vesssels
to smooth muscle

Question 19

what is the lymphatic drainage of the breast

Answer 19

axillary lymph nodes
some to supraclavicular and inferior cervical nodes
medial to parasternal

Question 20

what is the venous drainage of the breast

Answer 20

mostly to the axially vein