II. Vertebral Foramen Part 2 of 3

Question 1

What are the branches of the spinal artery?

Answer 1

osseous arteries, anterior spinal canal artery, posterior spinal canal artery, anterior medullary feeder artery, posterior medullary feeder artery, anterior radicular artery, posterior radicular artery

Question 2

Which branches of the spinal artery supply the contents of the epidural space?

Answer 2

osseous arteries, anterior spinal canal artery, posterior spinal artery

Question 3

What arteries are observed in the epidural space near the posterior longitudinal ligament?

Answer 3

anterior spinal canal artery and plexus

Question 4

What arteries are observed in the epidural space near the ligamentum flavum?

Answer 4

posterior spinal canal artery and plexus

Question 5

Which branches of the spinal artery supply the contents of the subarachnoid space?

Answer 5

anterior radicular artery, posterior radicular artery, anterior medullary feeder artery, posterior medullary feeder artery

Question 6

Which vessel will supply the ventral/anterior nerve rootlets, nerve root and nerve root ganglion?

Answer 6

anterior radicular artery

Question 7

Which vessel will supply the dorsal/posterior nerve rootlets, nerve root and nerve root ganglion?

Answer 7

posterior radicular artery

Question 8

Which artery is now said to enlarge and form the medullary feeder artery?

Answer 8

the radicular artery

Question 9

What is the location and number of medullary feeder arteries present in the adult?

Answer 9

9 anterior and 12 posterior medullary feeder arteries

Question 10

The anterior spinal artery is a branch of which artery?

Answer 10

the vertebral artery

Question 11

Is the anterior spinal artery a single, continuous artery along the spinal cord?

Answer 11

no

Question 12

As the anterior spinal artery continues along the spinal cord, which arteries unite along its length to give the appearance of a single continuous artery?

Answer 12

anterior medullary feeder arteries

Question 13

The posterior spinal artery is a branch of which artery?

Answer 13

the posterior inferior cerebellar artery

Question 14

What is the position of the posterior spinal artery relative to the spinal cord?

Answer 14

it lies in the posterolateral sulcus along the spinal cord

Question 15

As the posterior spinal artery continuous along the spinal cord, which arteries unite along its length to give the appearance of a single continuous vessel?

Answer 15

posterior medullary feeder arteries

Question 16

What forms the arterial vasa corona above C3?

Answer 16

right and left anterior spinal arteries, right and left posterior spinal arteries, and 4 communicating arteries

Question 17

What forms the arterial vasa corona below C6?

Answer 17

a median anterior spinal artery, right and left posterior spinal arteries, and 3 communicating arteries

Question 18

What is the generic name given to arteries that penetrate the spinal cord?

Answer 18

intramedullary arteries

Question 19

What are the intramedullary branches of the arterial vasa corona?

Answer 19

pial perforating arteries and central/ventral/sulcal perforating arteries

Question 20

What artery gives off the ventral/central/sulcal perforating arteries?

Answer 20

the anterior spinal artery

Question 21

What arteries are responsible for supplementing the arterial vasa corona along the cord?

Answer 21

anterior medullary feeders and posterior medullary feeders

Question 22

What vessels drain the spinal cord?

Answer 22

pial veins

Question 23

What will pial veins drain into?

Answer 23

venous vasa corona

Question 24

Which vessels form the venous vasa corona?

Answer 24

right and left anterior longitudinal veins, right and left posterior longitudinal veins, and 4 communicating veins