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Posterior Mediastinum
Medical School Gross Anatomy
14
Anatomy
Graduate
10/18/2011

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Cards

Term
esophageal arteries in the posterior mediastinum come from what vessel?
Definition
Descending Aorta
Term
The Sumpreme intercostal artery (intercostal spaces 1-2) come off of what vessel?
Definition
Costocervical trunk
Term
Where are the three constrictions of the esophagus in the thorax
Definition
Cricopharyngesu muscle at C8

Arch of Aorta and Left primary bronchus at T4-T5

Inferior esophygeal Constrictor/Esophygeal Hiatus at T10
Term
Unexpected constriction of the esophagus will have what clinical presentation?
Definition
Dysphagia
Term
Upper third of the esophagus in the thorax is drained by which lymph nodes?
Definition
Deep Cervical
Term
Middle third of the esophagus in the thoracic cavity is drained by which lymphnodes?
Definition
Mediastinal lymph nodes
Term
Inferior third of the esophagus in the thorax is drained by which lymph nodes?
Definition
Celiac nodes
Term
The anterior Vagus nerve is originally from which side of the body?
Definition
Left side
Term
The posterior Vagus nerve is originally from which side of the body?
Definition
Right side
Term
What vein provides drainage for the majority of the thoracic wall?
Definition
Azygos vein
Term
The azygos drains into the superior vena cava via which vessel?
Definition
Arch of the Azygos
Term
What veins cover the left posterior thoracic wall and drain into the azygos?
Definition
Accessory Hemiazygos and Hemiazygos veins
Term
Besides drainage from the posterior wall, what is the function of the Azygos system of veins?
Definition
The Azygos system of veins can shunt blood to the superior Vena Cava if flow is diminished to the inferior (internal thoracic also serves this function)
Term
What are natural aortic bypasses to help deal with diminished flow?
Definition
internal thoracic and inferior epigastric provide aortic bypass
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