Thorax 1 Flashcards
1
Q
sternoclavicular joint
A
- only bony attachment between appendicular and axial skeleton
- moves like ball and socket
2
Q
costal cartilages
A
- attachment between rib and sternum/manubrium
- rib 7-10 = costal arch
3
Q
Sternal angle
A
- junction between manubrium & body of sternum
4
Q
Floating ribs
A
- ribs 11 and 12
- connected only to vertebrae
5
Q
Rib 1
A
- flattest, widest, broadest, shortest
- lays under clavicle
6
Q
Rib 2
A
- 2X longer than rib 1
7
Q
Articulation of rib and vertebrae
A
- ex: T7 articulates rib 7 at superior articular facet of T7 and inferior articular facet of T6
8
Q
internal thoracic/mammary artery
A
- attached to subclavian artery superiorly and inferiorly to the superior epigastric artery
9
Q
muscles of thoracic cage
A
- external intercostal
- internal intercostal
- transverse thoracis
- innermost intercostal
- subcostal
- all innervated by ventral primary rami
10
Q
intercostal artery
A
- lays in between innermost and intercostal muscle
11
Q
collateral branches
A
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
Q
phrenic nerve
A
- runs in fibrous pericardium with pericardiacophrenic (branch of internal thoracic artery) artery
13
Q
least splanchnic nerve
A
- more difficult to find
- diaphragm above it
14
Q
fibrous pericardium
A
- parietal pleura abutts against parietal pericardium
15
Q
central tendon of diaphragm
A
- adheres to diaphragm and parietal pericardium
16
Q
sternal angle
A
- T4-5
17
Q
Azygous vein
A
- 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
Q
Hemiazygous vein
A
- formed by union of left subcostal and ascending lumbar veins
- lower end connected to left renal vein
- drains vena cava
19
Q
right brachiocephalic trunk
A
- formed by right internal jugular vein and right subclavian vein
20
Q
left brachiocephalic trunk
A
- formed by left internal jugular vein and left subclavian vein
21
Q
brachiocephalic trunk
A
- located immediately posterior to manubrium
- right and left formed superior vena cava
- inferior thyroid veins R and L drain here
22
Q
pulmonary ligament
A
- at hilum of lung, parietal pleura reverse itself and becomes visceral pleura
- parietal –> visceral pleura
23
Q
visceral pericardium
A
- covers the roots of the great vessels
24
Q
left pulmonary artery
A
- 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
