F1: Mediastinum Flashcards
Mediastinum
Boundaries:
Superior
thoracic outlet and root of the neck
Mediastinum Boundaries Inferior
Diaphragm
Mediastinum Lateral Boundary
Pleural cavities
Anterior Boundary Mediastinum
Sternum and transversus thoracic muscles
Posterior Boundary Mediastinum
Vertebral column
Contents of Mediastinum (TR-HLV-TR-E-TDLN-VPST)
Thymus remnants
Heart and large blood vessels
Trachea
Esophagus
Thoracic Duct and lymph nodes
Vagus and phrenic nerves
Sympathetic trunks
Tmaginary plane passing from the sternal angle to the (upper, lower) border of the body of (T4,T5) (anteriorly, posteriorly)
lower, T4, posteriorly
Landmarks to the key structures of superior mediastinum
Jt bet manubrium and sternum
2nd costosternal jt
Demarcation bet ascending aorta and arch of aorta
Demarcation bet arach of aorta and the descending aorta
Bifurcation of trachea
Left primary bronchus
T4 IV disc
Anterior and Posterior Boundaries of Superior Mediastinum
Ant: Manubrium sterni
Post: t1-t4
Site at which immature lymphocytes develop to T lymphocytes
Thymus
T or F
Thymus begins involution before pubery
F, after puberty
Inferior mediastinum divides into three mediastinum
A, P, and middle
Middle mediastinum contents
Pericardium and heart
Anterior mediastinum is ___
Space between pericardium and the sternum
Posterior mediastinum lies __
Lies between the pericardium and the VC
Inferior mediastinum boundaries
Anterior: Body of the sternum
Posterior: T5-T12
Inferior mediastinum contents (6) THE STD
Thymus
Heart within the pericardium with phrenic nerves on each side
Esophagus
Thoracic Duct
Descending aorta
Sympathetic Trunk
Anterior mediastinum anterior and posterior boundary
Anterior boundary: Sternum and tranverse thoracic muscles
Posterior boundary: Pericardium
Contents of the anterior mediastinum (TR-LN-F-CT]
Remnants of thymus gland
Lymph nodes
Fat
Connective tissue
Boundary of Middle mediastinum
Between right and left pleural cavities
Contents of Middle mediastinum
Heart
Pericardium
Phrenic nerves
Roots of great vessels: Aorta, Pulmonary Arteries and Veins, Vena Cavae
Arch of the azygos vein
Main Bronchi
Posterior boundary of Posterior mediastinum
T5-T12
Anterior boundary of the posterior mediastinum
Pericardium
Contents of Middle Mediastinum
Heart
Pericardium
Phrenic nerves
Roots of great vessels: Aorta, Pulmonary Arteries and Veins, Vena Cavae
Arch of the azygos vein
Main Bronchi
