Superior Medistinum

Question 1

Superior Vena Cava

Answer 1

Formed from the right and left brachiocephalic veins

-which are formed from the union of the internal jugular vein and subclavian vein on that side

Question 2

Right and left phrenic nerves

Answer 2

Posterior to the subclavian veins

Question 3

Left Vagus Nerve

Answer 3

Posterior to the brachiocephalic vein.

-located in the loose connective tissue just medial to the mediastinal pleura, so you may see them through this tissue

Question 4

Ascending Aorta (curves posteriolaterally forming the aortic arch which gives off 3 branches)

Answer 4

Brachiocephalic Trunk: terminates into right subclavian artery and right common carotid artery

Left common carotid artery

Left subclavian artery

Question 5

Ligamentum Arteriosum

Answer 5

Connecting the pulmonary trunk to the arch of the aorta

-left vagus nerve passing across the lateral surface of the aortic arch

Question 6

Left Recurrent Laryngeal Nerve

Answer 6

Wraps around the ligamentum arteriosum to ascend posterior to the arch