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Flashcards in Thorax, Topnotch Deck (46):
1

Xiphoid process becomes bony by

40 years

2

Xiphisternal junction lies at what vertebral level

T9

3

Level: Azygous vein drains into SVC

Sternal angle of Louis

4

Ribs #

24 (12 pairs)

5

Rib, head: Articular facets are separated by

Crest

6

Rib, neck: Located between

1) Head
2) Tubercle

7

Rib, tubercle: Non-articular part is attached to

Lateral costotransverse ligament

8

Typical ribs, #

3-9

9

Atypical ribs, #

1-2, 10-12

10

Rib: Broadest and most curved

Rib 1

11

Rib: Has tuberosity for serratus anterior

Rib 2

12

Rib: No neck or tubercle

Rib 11-12

13

Rib: Weakest point

Just anterior to the angle

14

Rib: Rarely fractured

1

15

Rib: Most commonly fractured

7-10

16

Costal margin: Formed by

Medial ends of 7th-10th costal cartilages

17

Costal margin: Right and left margin form

Costal arch

18

Type of joint: Costosternal angle of rib 1

Cartilaginous

19

Where thoracic cavity communicates with root of neck

Thoracic outlet

20

Thoracic outlet: Anterior boundary

Suprasternal notch

21

Thoracic outlet: Lateral boundary

Medial border of first rib

22

Thoracic outlet: Posterior boundary

T1

23

Inferior thoracic aperture: Anterior boundary

Xiphisternal joint

24

Inferior thoracic aperture: Anterolateral boundary

Costal margin

25

Inferior thoracic aperture: Posterolateral boundary

Rib 11-12

26

Inferior thoracic aperture: Posterior boundary

T12

27

Part of brachial plexus compressed in thoracic outlet syndrome

Lower trunk

28

Compression of lower trunk in thoracic outlet syndrome produces

1) Pain down the medial forearm and hand
2) Wasting of hand muscles

29

Muscles of thoracic wall, #

8

30

Thorax: Transverse diameter produces what inspiratory movement

Bucket handle

31

Thorax: AP diameter produces what inspiratory movement

Pump handle

32

Effect on thoracic diameters: Inspiration

Increases all diameters

33

Effect on thoracic diameters: Expiration

Decreases all diameters

34

Muscles that depress the ribs

1) Serratus posterior
2) Internal intercostals
3) Transverus thoracis

35

Muscles of the thoracic wall

1) Serratus posterior superior and inferior (2)
2) External, internal, and innermost intercostals (3)
3) Levator costarum (1)
4) Subcostal (1)
5) Transversus thoracis (1)

36

Common insertion of thoracic wall muscles

Ribs

37

Thoracic wall muscles: Originate from vertebra

1) Serratus posterior superior and inferior
2) Levator costarum

38

Thoracic wall muscles: Originate from sternum

Transversus thoracis

39

Mediastinum, boundaries: Superior

Root of neck

40

Mediastinum, boundaries: Inferior

Diaphragm

41

Mediastinum, boundaries: Anterior

1) Sternum
2) Costal cartilages
3) Xiphisternal joint

42

Mediastinum, boundaries: Posterior

Bodies of T1-12

43

Mediastinum, contents: Superior, #

13
1) LN
2) Trachea
3) Esophagus
4) Thoracic duct
5) Aortic arch
6) Brachiocephalic artery and veins
7) Left common carotid
8) Left subclavian
9) SVC
10) Thymus
11) Vagus nerve
12) Phrenic nerve
13) SY trunk

44

Mediastinum, contents: Anterior, #

3
1) LN
2) Thymus
3) Sternopericardial ligament

45

Mediastinum, contents: Middle

6
1) Heart
2) Pericardium
3) Root of great vessels
4) LN
5) Phrenic nerve
6) Main bronchi

46

Mediastinum, contents: Posterior

8
1) LN
2) Vagus
3) SY trunk
4) Thoracic duct
5) Esophagus
6) Azygous vein
7) Hemiazygous vein
8) Descending thoracic aorta