The Mediastinum Flashcards
In anterior inferior mediastinum: 3
Connective tissue, lymphatics, thymus
Contents of superior mediastinum
Great vessels, nerves, viscera
What are the great vessels: 3
Brachiocephalic veins, superior part of SVC, and arch of aorta
What makes up arch of aorta
Brachiocephalic trunk (right side only), left common carotid artery, left subclavian artery
Nerves in superior mediastinum
Vagus, phrenic, left recurrent laryngeal
Phrenic nerve is __ to lung, vagus is __ to lung. Left recurrent laryngeal runs next to ___
Anterior, posterior, trachea
What forms when ductus arteriosus closes
Ligamentum arteriosum
Where do foreign object end up
Right primary bronchus
Viscera of superior mediastinum: 3
Trachea, esophagus, thoracic duct
Posterior mediastinum: 5
Thoracic/descending aorta Azygous and hemiazygous veins Esophagus Thoracic sympathetic trunks Thoracic sphlanic nerves
What branches come off of thoracic aorta: 5
Coronary arteries Bronchial Posterior intercostal/subcostal Superior phrenic Esophageal
Only rib to have subcostal artery
12th
Esophagus:
Thoracic part ___ to __
Abdominal party __ to __ __
Pharynx to diaphragm
Diaphragm to cardiac orifice
Esophagus: areas of constriction, 3
Arch of aorta
Left main bronchus
Esophageal hiatus
Area of constriction is what
Where swallowed foreign objects most likely to lodge and where stricture may develop after drinking caustic fluid
Azygous system of veins:
___ in origin, tributaries, termination
Azygous is where, hemiazygous is where
Variable, A- right, h left
Azygous system of veins returns blood from 4
Intercostal spaces
Back
Thoracoabdominal walls
Mediastinal viscera
SNS to superior and posterior mediastinum
Sympathetic chain and sphlanic nerves
PNS to mediastinum
Vagus nerve
Plexi in mediastinum 4
Aortic, cardiac, pulmonary, esophageal
Sternal angle/angle of louis
What level
Border of __ and __ __
At ___/___ of __
T4/5 intervertebral disc
Superior and inferior mediastinum
Manubrium/body of sternum
Sternal angle
At __ of __
Beginning of __ __
__ __ crosses from __ to __
Bifurcation of trachea
Aortic arch
Thoracic duct, left to right
