Thoracic Cavity/Sup. Mediastinum

Question 1

What is the only structure within the anterior mediastinum?

Answer 1

Thymus.

Question 2

What is the landmark for the superior/inferior mediastinum border?

Answer 2

Sternal angle

Question 3

Nerve that runs under the hylum of the lung

Answer 3

Vagus nerve

Question 4

Nerve that runs between the subclavian arteries and veins

Answer 4

Phrenic nerve

Question 5

Structure that lies posterior to the left atrium

Answer 5

Esophagus

Question 6

Three layers of the pericardium

Answer 6

Fibrous and serous (parietal and visceral)

Question 7

Artery that runs down the underside of the anterior rib cage

Answer 7

Internal Thoracic Artery

Question 8

Muscle on the inner aspect of the chest wall

Answer 8

Transversus Thoracis

Question 9

Locations for thoracocentesis

Answer 9

Ribs 6-8 at mid clavicular line, ribs 8-10 at mid axillary line, ribs 10-12 at mid scapular line

Question 10

Recess used for thoracocentesis

Answer 10

Costodiaphragmatic recess

Question 11

Right and left brachiocephalic veins flow into the

Answer 11

Superior Vena Cava

Question 12

What flows into the brachiocephalic veins?

Answer 12

Jugular and subclavian veins

Question 13

Around what structure does the right recurrent laryngeal nerve pass?

Answer 13

Right subclavian artery

Question 14

Around what structure does the left recurrent laryngeal nerve pass?

Answer 14

Ligamentum arteriosum

Question 15

What is the ligamentum arteriosum a remnant of? What did it do?

Answer 15

Fetal ductus arteriosus. Allowed blood to bypass fetal lungs

Question 16

What does the ligamentum arteriosum connect?

Answer 16

Left pulmonary artery to arch of the aorta

Question 17

What are the three “sentinels” off the aortic arch?

Answer 17

Brachiocephalic trunk, left common carotid artery, and left subclavian artery.