16- Thorax IV Flashcards
What structures is the posterior mediastinum anterior to?
vertebral bodies T5- T12
What structures is the posterior mediastinum posterior to?
Pericardium/ Heart
Diaphragm
What part of the mediastinum is the posterior mediastinum a subsection of?
Inferior mediastinum
What is the posterior mediastinum inferior to?
sternal angle
What is the order of the following anterior to posterior?
veins/ arteries/ trachea/ esophagus
veins/ arteries/ trachea/ esophagus
What is anterior to arteries?
veins
What is anterior to the esophagus?
trachea
What is posterior to arteries?
trachea
What is posterior to trachea?
esophagus
What is posterior to veins?
arteries
What part of the mediastinum is the arch of the aorta in?
Superior mediastinum
What is the major artery of the superior mediastinum?
arch of the aorta
What are the 3 main divisions odd the arch of the aorta?
Brachiocephalic trunk
Left common carotid artery
Left subclavian artery
What part of the mediastinum is the ascending aorta in?
middle mediastinum = inferior mediastinum
Where do the veins of the superior mediastinum go to?
SVC
What receives venous blood from the intercostal spaces?
Azygos vein
Where does the azygos vein empty into?
SVC
How does the arch of the aorta (superior mediastinum) continue distally?
descending aorta
- in posterior mediastinum
What part of the mediastinum is the trachea located in?
only superior
Is the trachea present in the middle mediastinum?
no- only superior
middle = inferior
Where does the trachea bifurcate?
sternal angle
Is the esophagus present in the posterior mediastinum?
yes- starts in superior/ continues down posterior
What are 2 major structures present in the posterior mediastinum?
Esophagus
Descending/ thoracic aorta
What part of the mediastinum is the descending/ thoracic aorta in?
Posterior mediastinum
What does the esophagus cross over in the posterior mediastinum? (starts in front/ goes behind)
descending/ thoracic aorta
What part of the mediastinum are the posterior intercostal arteries in?
posterior mediastinum
What does the thoracic/ descending aorta supply?
intercostal space (posterior intercostal arteries)
esophagus
pericardium
lungs (bronchial arteries)
diaphragm (phrenic arteries)
What are the arteries in the diaphragm called?
Phrenic arteries
What are the arteries in the lungs called?
Bronchial arteries
What nerve heads posteriorly towards the esophagus from the superior mediastinum?
Vagus nerve
What nerve is in “phront” of the root of the lung in the superior mediastinum?
Phrenic nerve
What is the vagus nerve distal/ lateral to?
Aorta
