Divisions of the Mediastinum

Question 1

This is the smallest mediastinum, it is deep to the sternum and bounded by the sternal angle, pericardial sac, and diaphragm.

Answer 1

Anterior mediastinum.

Question 2

What is contained within the anterior mediastinum? (2 items)

Answer 2

Adipose tissue and Thymus.

Question 3

This is the mediastinum that only contains the pericardial sac and heart.

Answer 3

Middle Mediastinum.

Question 4

This mediastinum is posterior to the pericardial sac.

Answer 4

Posterior Mediastinum.

Question 5

What structure are contained in the posterior mediastinum?

Answer 5

Descending thoracic aorta, azygos system of veins, thoracic duct, esophagus, and sympathetic nerves.

Question 6

This mediastinum is the region above the sternal angle.

Answer 6

Superior mediastinum.

Question 7

What structures are contained in the anterior mediastinum?

Answer 7

Aortic arch (Brachiocephalic trunk, Left common carotid artery, and Left subclavian artery), SVC (Left and Right Brachiocephalic veins), Trachea, Esophagus, Phrenic Nerves, Vagus Nerves, and Thymus.