Thoracic Cavity Flashcards
The superior cavity is divided by what landmark?
T4-T5 and sternal angle
Superior mediastinum can be divided into ____(2) while the inferior mediastinum can be divided into ___(3)____
Retrosternal and prevertebral
Anterior, middle and posterior
Great vessels/branches and thymus are in what part of superior mediastinum?
Retrosternal
Prevertebral subdivision of superior mediastinum includes
trachea esophagus thoracic duct sympathetic trunks vagus nerves
The anterior portion of the inferior mediastinum has contents including
thymus
fat
lymph nodes
The middle portion of the inferior mediastinum has contents including
pericardium
phrenic nerves
pericardiophrenic artery
heart and great vessels
The posterior portion of the inferior mediastinum has contents including
esophagus thoracic duct aorta and branches vagus nerves sympathetic trunks azygos system of veins
Thymus is vascularized by (2)
anterior mediastinal arteries from internal thoracic artery
inferior thyroid arteries from subclavian artery
Thymus is innervated by
Parasympathetically via vagus
Sympathetically via cardiac sympathetic plexus
The thymus venous drainage is
left brachiocephalic vein
What is ligaments of the pericardium?
Pericardiaphrenic ligament
Superior/inferior sternopercardial ligament
What is the blood supply of the pericardium?
pericardial arteries
pericardiacophrenic arteries
musculophrenic arteries
Nerve supply of the pericardium
CN X
Phrenic nerve
Sympathetic trunk
The esophagus starts at ____ located behind ___ then passes in front of the___then to the right of the ___ and finally passes through the diaphragm at ____ level
base of the neck trachea vertebral column thoracic aorta T10
The esophagus is vascularized by
bronchial artery
thoracic aorta
left gastric artery
left inferior phrenic artery
The esophagus is innervated by
esophageal plexus
The upper third of the esophagus is ____ and ____
voluntary and sympathetic
recurrent laryngeal nerve
The lower two thirds is ____ and ____
Involuntary and paraympathetic
vagus and sympathetic chain
Thoracic aorta direction
Continuation of aortic arch
Begins at lower border of t4 at sternal angle and ends at diaphragm along T12.
Where does the azygos vein form?
below of the level of the diaphragm by union of right ascending lumber vein and right subcostal vein
Azygos vein direction
ascends along RIGHT side of thoracic vertebral column
arches over root of right lung and enters superior vena cava
The hemiazygos and accessory hemiazygos vein both stem from ____ and end at ____. But hemiazygos, travels on the ___ side of vertebral bodies and crosses at level___. The accessory hemiazygos runs on the ____ and ___ of vertebral bodies.
diaphragm, piercing it azygos vein Left T9 Left and upper thoracic
What are the five main lymph nodes?
Parasternal nodes Posterior intercostal nodes diaphragmatic nodes posterior mediastinal nodes brachiocephalic nodes
(Please Pick Dr. Pepper Beta)
Where does the parasternal node receive lymph?
thoracic wall
upper anterior abdominal wall
Diaphragm
Mammary Gland
