Anterior Thorax Flashcards Preview

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Flashcards in Anterior Thorax Deck (41):
1

Costal Margin

Edge of most inferior costal cartilage

2

Jugular Notch

Most superior edge of sternum

3

Manubrium

Part of sternum between jugular notch and sternal angle

4

Sternal Angle (+ location)

Point where manubrium meets sternal body (2nd rib + T4)

5

Xiphisternal Joint

Point where xiphoid process attaches to sternal body/where costal cartilage meets body

6

Xiphoid Process

Part of sternum that sticks out below xiphisternal joint

7

Sternoclavicular Joint

Point where sternum and clavicle meet

8

Acromion Process

Posterior process extending from superior scapula

9

Coracoid Process

Anterior process extending from scapula

10

Male Nipple Location (2)

4th intercostal space on midclavicular line/T4 dermatome

11

Suspensory (Cooper's) Ligaments

White strands extending from pectoralis fascia on pectoralis major

12

Mammary Pathway

(15-20) glandular lobes->lactiferous ducts->lactiferous sinuses->(15-20) open onto surface of nipple

13

Areolar (Montgomery) Glands

Sebaceous glands on areola

14

Mammary Gland Lymphatic Drainage (2.2)

75% Axillary Nodes (pectoral, apical)
Parasternal Nodes

15

Pectoral Axillary Nodes

4 of 5 glands along lower border of pectoralis minor, in relation w/ lateral thoracic artery

16

Apical Axillary Nodes

6-12 glands partly posterior and superior to pectoralis minor

17

Parasternal Lymph Nodes

Follow medial portion of breast

18

3 Innervates of Mammary Gland

Supraclavicular nn. from above, intercostal nn., lateral mammary branches, intercostal nn., medial mammary branches

19

Lateral Cutaneous Branch of Intercostal nn.

Separates ant. and post. branch of intercostal nn.

20

3 Dermatome Landmarks

T1 - above sternal angle
T4 - nipple area
T10 - belly button

21

3 Parts of Pec Major (Sup.->Inf.)

Clavicular, sternocostal, abdominal

22

Deltopectoral Triangle

Gap between deltoid and pectoralis major where you can see axillary a. and v.

23

Pectoralis minor innervation

Medial pectoral nn.

24

Pectoralis minor origin

Ribs 3-5

25

Pectoralis minor insertion

Coracoid process

26

Pectoralis minor action

Stabilizes scapula

27

Pectoralis major innervation

Medial pectoral and lateral pectoral nerves

28

Pec major origin (2.3)

Has clavicular head (anterior surface of medial clavicle) and sternocostal head (anterior sternum and sup. costal cartilages)

29

Pec major insertion

Intertubercular groove

30

Pec major action

Adducts and medially rotates humerus

31

Transversus thoracis innervation

Segmentally by intercostal nn.s

32

Transversus thoracis origin (2)

Post. surface of xiphoid process and lower 3rd of sternum

33

Transversus thoracis insertion

Inner surface of costal cartilages of ribs 2-6

34

Transversus thoracis action

Draws costal cartilages inferiorly

35

6 Mammary Gland Clinical Considerations

Cancer, polythelia, amastia, hypomastia, polymastia, gynecomastia

36

Pleural cupula

Little domes of pleural cavity that rise above clavicles

37

Costomediastinal recesses

Potential space at border of mediastinal pleura and costal pleura

38

Pericardial sac

Double-walled sac containing heart and roots of great vessels

39

Cardiac Notch

Area of left lung curved to allow heart, where pericardium is exposed

40

Costodiaphragmatic Recesses

Potential space of pleural cavity at junction of costal pleura and diaphragmatic pleura

41

5 Boundaries of Thoracic Cavity

Post: 12 thoracic vertebrae
Lat: 7 true ribs/5 false ribs (inc. 2 floating ribs)
Ant: Sternum
Sup: Superior thoracic aperture (thoracic inlet)
Inf: Inf. thoracic aperture (thoracic outlet)