3.3 Superior Mediastinum

Question 1

Identify the R and L brachiocephalic vein. What vein to these drain into?

Answer 1

SVC

Question 2

Identify the SVC

Answer 2

–

Question 3

Identify the R and L internal jugular vein. Into what veins do these drain?

Answer 3

Internal veins join with Subclavians to drain into SVC.

Question 4

Identify the R and left subclavian vein. Into what vein does this drain?

Answer 4

brachiocephalics to SVC

Question 5

Identify the Thoracic duct. Where does it terminate?

Answer 5

Into the union of the internal jugular and subclavian veins on the left side

Question 6

Identify the R and L phrenic nerve. From where do these originate?

Answer 6

C3-C5

Question 7

Identify the R and L vagus nerve. From where do these originate?

Answer 7

CNX

Question 8

Identify the Trachea

Answer 8

–

Question 9

Identify the Esophagus

Answer 9

–

Question 10

Identify the Brachiocephalic trunk. From where does it originate and where does it terminate?

Answer 10

Originates from aortic arch. It terminates into right common carotid and right subclavian arteries.

Question 11

Identify the R subclavian artery. What artery is this a continuation of?

Answer 11

the brachiocephalic trunk.

Question 12

Identify the R and L common carotid artery. From what artery does these originate?

Answer 12

Right common carotid originates from brachiocephalic trunk.

Left common carotid originates from the arch of the aorta.

Question 13

Identify the L subclavian artery. From what artery does this originate?

Answer 13

Arch of the aorta.

Question 14

Locate the Ligamentum arteriosum

Answer 14

Connecting pulmonary trunk to arch of aorta. (Formerly ductus arteriousus)

Question 15

Identify the Arch of aorta and its 3 branches.

Answer 15

1. Brachiocephalic trunk.
2. Left common carotid artery.
3. Left subclavian artery.

Question 16

Identify the L recurrent laryngeal nerve

Answer 16

A branch of the vagus nerve, wrapping around the ligamentum arteriosum to ascend posterior to the arch of the aorta.

Question 17

Identify the R recurrent laryngeal nerve

Answer 17

Comes off the right vagus and passes up behind the right subclavian artery in the root of the neck

Question 18

Identify the Pulmonary trunk. What branches off of the trunk?

Answer 18

R and L pulmonary arteries