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Question 1

What are the margins of the superior mediastinum?

Answer 1

From the thoracic inlet
to the sternal angle and the IV between T4 and T5

Question 2

What are the three divisons of the inferior mediastinum?

Answer 2

Anterior mediastinum
Middle mediastinum
Posterior mediastinum

Question 3

What are the margins of the Anterior mediastinum?

Answer 3

Located between the Sternum and pericardium

Question 4

What are the margins of the Middle mediastinum?

Answer 4

Between the anterior and posterior mediastinum

Question 5

What are the margins of the posterior mediastinum?

Answer 5

Between the pericardium and thoracic vertebrae

Question 6

What does the superior mediastinum contain?

Answer 6

Anteriorly: thymus gland
(or its remains) and great veins

Middle: aortic arch and its three great branches, vagus nerve, phrenic nerve.

Posteriorly: Trachea, esophagus, left recurrent laryngeal nerve, thoracic duct.

Question 7

What are the structures that can get affected from an improper sternal puncture in the manubrium??

Answer 7

In the upper part: Left brachiocephalic vein (bc the great veins are in the upper part of the superior mediastinum)

In the lower part aortic arch (bc it is in the middle )