Thorax 1 Flashcards Preview

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Flashcards in Thorax 1 Deck (26):
1

sternoclavicular joint

- only bony attachment between appendicular and axial skeleton
- moves like ball and socket

2

costal cartilages

- attachment between rib and sternum/manubrium
- rib 7-10 = costal arch

3

Sternal angle

- junction between manubrium & body of sternum

4

Floating ribs

- ribs 11 and 12
- connected only to vertebrae

5

Rib 1

- flattest, widest, broadest, shortest
- lays under clavicle

6

Rib 2

- 2X longer than rib 1

7

Articulation of rib and vertebrae

- ex: T7 articulates rib 7 at superior articular facet of T7 and inferior articular facet of T6

8

internal thoracic/mammary artery

- attached to subclavian artery superiorly and inferiorly to the superior epigastric artery

9

muscles of thoracic cage

1. external intercostal
2. internal intercostal
3. transverse thoracis
4. innermost intercostal
5. subcostal
- all innervated by ventral primary rami

10

intercostal artery

- lays in between innermost and intercostal muscle

11

collateral branches

NAV
- vein crosses over nerve and artery
- nerve crosses over artery
- only membranes cover these structures (closest to vertebrae), move laterally innermost covers them (hid behind them)

12

phrenic nerve

- runs in fibrous pericardium with pericardiacophrenic (branch of internal thoracic artery) artery

13

least splanchnic nerve

- more difficult to find
- diaphragm above it

14

fibrous pericardium

- parietal pleura abutts against parietal pericardium

15

central tendon of diaphragm

- adheres to diaphragm and parietal pericardium

16

sternal angle

- T4-5

17

Azygous vein

- right side
- formed by right ascending lumbar and subcostal veins
- drains into inferior vena cava
- enters thorax through aortic opening of diaphragm
- receives right intercostal veins and right superior intercostal vein, hemiazygous, and accessory hemiazygous

18

Hemiazygous vein

- formed by union of left subcostal and ascending lumbar veins
- lower end connected to left renal vein
- drains vena cava

19

right brachiocephalic trunk

- formed by right internal jugular vein and right subclavian vein

20

left brachiocephalic trunk

- formed by left internal jugular vein and left subclavian vein

21

brachiocephalic trunk

- located immediately posterior to manubrium
- right and left formed superior vena cava
- inferior thyroid veins R and L drain here

22

pulmonary ligament

- at hilum of lung, parietal pleura reverse itself and becomes visceral pleura
- parietal --> visceral pleura

23

visceral pericardium

- covers the roots of the great vessels

24

left pulmonary artery

- arches over the left primary bronchus

25

right pulmonary artery

- under the arch of the right primary bronchus

26

posterior mediastinum structures

- esophagus
- vagus
- azygous vein
- thoracic duct