1) mediastinum Flashcards
(11 cards)
superior mediastinum borders
thoracic inlet to transverse thoracic plane = sternal angle to T4/T5
pleura laterally
brachiocephalic veins lie between
sternoclavicular joint anteriorly and arteries posteriorly
brachiocephalic veins are formed from
internal jugular + subclavian veins
brachiocephalic veins unite at _____ to form ____
level of 1st costal cartilage to form the superior vena cava
which brachiocephalic vein is longer and by how much?
left is more than 2x longer than the right
which vein enters the superior vena cava and where
azygos vein enters at level of 2nd costal cartilage
where does the superior vena cava enter into and at what level?
enters into right atrium at level of costal cartilage 3
which nerve supplies the diaphragm and from which root does it arise?
the phrenic nerves arising from roots C3,C4,C5 - so spinal injuries lower than neck can still breathe
the branches of the aorta in order and their subsequent branches
- brachiocephalic trunk - right subclavian , right carotid
- left common carotid
- left subclavian
which regions do the azygos system of veins drain
- back
- thoracoabdominal walls
- mediastinal viscera
what is the collateral pathway between the superior + inferior vena cavas?
azygos veins
