Breast and Thoracic Wall Flashcards Preview

Anatomy and Radiology Test 2 > Breast and Thoracic Wall > Flashcards

Flashcards in Breast and Thoracic Wall Deck (67)
Loading flashcards...
1

Mammary gland origin

Epidermis of the skin (modified sweat gland)

2

Location of mammary glands

Superficial fascia
Superficial to pec major

3

Glandular Tissue composition and location

15-20 lobes radially arranged around nipple
Made of several lobules with ducts that converge and open on the surface of the nipple

4

Lactiferus ducts

Have dilation towards nipple that serves as a reservoir for milk

5

Reservoir for milk names

Ampulla or sinus

6

What part of mammary extends toward axilla?

Axillary tail of spence

7

Suspensory ligaments composition, locaiton, and functiojn

Fibrous bands running from deeper (membranous) layer of superficial fascia to the dermis
Surrounds and supports glandular tissues
Can be seen on a mammogram

8

Retromammary space function and location

Between superficial and deep fascia overlying pec major and serratus anterior...allows for movement of the breast on thoracic wall

9

Blood supply of mammary glands and origins/additional branches

Internal thoracic artery (perforating branches and anterior intercostal branches)
Lateral thoracic and thoracoacromial arteries (from axillary)
Posterior intercostal arteries (from thoracic aorta)

10

Which two arteries of mammary will anastomose

Posterior intercostal and anterior intercostal

11

Innervation of mammary glands and types of fibers found within

Intercostal nerves 4-6 (ventral primary rami)
Somatomotor, somatosensory, postganglionic sympathetic

12

Which two nerves pass lateral to mammary gland that cna be injured during masectomy?

Long thoracic and thoracodorsal

13

Most drainage of breast first passes to

Subareolar lymphatic plexus

14

Most drainage goes from subareolar lymphatic plexus to the

Axillary lymph nodes ------
Pectoral (ant)
Subscap (post)
Lateral
Central
Apical (to subclav trunk)

15

Parasternal nodes and where they drain (also artery associated with)

Can receive drainage from subareolar lymphatic plexus
Will then go to deep lymphatics associated with internal thoracic artery

16

Other route than drainage can go from subareolar lymph plex besdies parasternal and axillary nodes

Abdominal nodes and to contralateral breas t

17

Carcinomas of breast usually derived from

Epithelial cells of the lactiferous ducts

18

Primary and secondary spread of breast cancer

Lymphatic
Venous

19

What causes orange peel appearnace?

Edema of the skin from interference with lymph drainage

20

What does fibrosis cause and mechanism

Dimpling of the skin caused by shortening of the suspensory ligament

21

Invasion of retromammary space can

Fix the breast to the thoracic wall

22

General functions of the thoracic wall

Protection of organs
Respiration
Muscle attachment

23

Superior thoracic aperture and what is found on lateral thirds

Superior opening of the thoracic
Suprapleural membranes

24

Inferior thoracic aperture and what it is covered by

Inferior boundary of the thorax
Diaphragm

25

What passes throoug hthe inferior thoracic aperture

Aorta, esophagus, azygos v., inferior vena cava, and nerves

26

Endothoracic fascia and what does it form?

Deep fascia
Thickens over lungs to form suprapleural membrane

27

What lies deep to endothoracic fascia in areas adjacent to the lungs?

Parietal pleura

28

External intercostal - direction and attachments

Most superficial layer
Inferior and medially (on the front)
Vertebral bodies to the costochondral junction
DOES NOT EXTEND TO STERNUM LIKE THE EXTERNAL INTERCOSTAL MEMBRANE

29

Internal intercostal muscles - direction and attachments

Second layer
From sternum to angle of the ribs
DOES NOT EXTEND TO VERTEBRAL BODIES LIKE THE MEMBRANE DOES

30

Innermost intercostals - attachments

Track with the internal intercostals
Subcostal (extend more than one intercostal space near vertebral bodies )