Anatomy Of The Breast

Question 1

Horizontally the breast extends from where to where

Answer 1

From the lateral border of the sternum to the mid axillary line

Question 2

Vertically the breast extends from where to where

Answer 2

From the 2nd-6th costal cartilages

Question 3

The Breast lies superficial to which muscles

Answer 3

The pectoralis major and serratus anterior

Question 4

The breasts are separated from deep fascia by

Answer 4

The retro mammary space

Question 5

What are the regions of the breast

Answer 5

Circular body
Axillary tail

Question 6

The axillary tail runs from where to where

Answer 6

Runs along the inferior lateral edge of the pectoralis major towards axillary fossa

Question 7

The nipple is composed mostly of

Answer 7

Smooth muscle fibers

Question 8

Surrounding the nipple is a pigmented area of skin called the

Answer 8

Areolae

Question 9

What does it mean when they say that mammary glands are structurally dynamic

Answer 9

It means that their anatomy changes depending on a woman’s age, menstrual cycle and reproductive status

Question 10

Which hormone stimulates the mammary glands to produce milk

Answer 10

The pituitary hormone prolactin

Question 11

Which hormone stimulates the ejection of milk from the nipple

Answer 11

The hypothalamic hormone oxytocin

Question 12

Outside the postpartum period the Brest tissue is mostly filled with

Answer 12

Adipose

Question 13

The gland is composed of how many secretory lobes

Answer 13

15-20

Question 14

The secretory lobes are separated by fibrous bands called

Answer 14

Suspensory ligaments

Question 15

The suspensory ligaments originate from where and insert to where

Answer 15

The underlying clavi pectoral fascia and the dermis of the overlying skin

Question 16

What is the function of suspensory ligaments

Answer 16

To support the non-ptotic shape of the breasts

Question 17

The secretory ducts of the lobes called the lactiferous ducts converge and open into

Answer 17

The nipple

Question 18

Lymph from the breast lobules, nipple and Areola areas collect into

Answer 18

The subareolar lymphatic plexus

Question 19

Around 75% of lymph from the lateral quadrants of the breast drains into

Answer 19

The pectoral lymph nodes

Question 20

The pectoral lymph nodes drain into the axillary lymph nodes

Question 21

The axillary lymph nodes drain into the

Answer 21

Subclavian lymphatic trunks
Which also drain the upper limbs

Question 22

The parasternal lymph nodes drain into

Answer 22

The bronchomediastinal lymphatic trunks
Which also drain the thoracic organs

Question 23

Where are the intercostal lymph nodes located

Answer 23

Around the heads and necks of ribs

Question 24

The intercostal lymph nodes drain into

Answer 24

Either the thoracic lymph ducts or the bronchomediastinal lymph trunks

Question 25

What are the branches of the axillary artery supplying the lateral breast

Answer 25

Superior thoracic, thoracoacromial , lateral thoracic, subscapular arteries

Question 26

The lateral part of the breast is supplied by

Answer 26

Branches of the axillary artery

Question 27

The medial part of the breast is supplied by

Answer 27

Branches of the internal thoracic artery which become the medial mammary arteries

Question 28

The breast is innervated by

Answer 28

Anterior and lateral cutaneous branches of the 2nd -6th intercostal nerves

Question 29

The nipple is innervated by

Answer 29

The 4th intercostal nerve

Question 30

What is a mastectomy

Answer 30

It is an extensive removal of the breast and adjacent tissues for carcinoma