Exam 1

Question 1

What kind of shape is the diaphragm?

Answer 1

Convex

Question 2

Where does the hemiazygous dump blood into?

Answer 2

Azygous and then to superior vena cava

Question 3

What are the 2 primary blood supplies to the thoracic wall?

Answer 3

Aorta and subclavian arteries

Question 4

What are the two arteries called that supply blood directly to thoracic wall

Answer 4

Posterior intercostal arteries

Anterior intercostal arteries

Question 5

Where are posterior intercostal arteries from?

Answer 5

Descending thoracic aorta

Question 6

Where are the anterior intercostal arteries from

Answer 6

Internal thoracic artery from the subclavian artery

Question 7

Anterior intercostal arteries give off how many first intercostal spaces?

Answer 7

6

Question 8

What does the branching look like on the posterior intercostal artery

Answer 8

First two branch off the superior intercostal artery into intercostal spaces
Remaining posterior intercostal arteries branch off descending thoracic aorta

Question 9

Where are the cartilages 7-10 joined to form?

Answer 9

Infrasternal angle

Question 10

Why is barrel chested developed?

Answer 10

Lungs are chronically overinflated with air so rib cage partially expands all the time

Question 11

Important branch to distal spinal cord (usually form left side at L2)

Answer 11

Major radicular artery (adamkiewicz)

Question 12

Order of arteries from aorta to spinal cord:

Answer 12

1 aorta
2 R/L posterior intercostal artery
3 segmental medullary artery
4 anterior/posterior radicular artery