8/4 Questions Exam 1

Question 1

What is the name given to the artery that lies in front of the spinal cord along its length?

Answer 1

anterior spinal artery

Question 2

The anterior spinal artery is a branch of which artery?

Answer 2

the vertebral artery

Question 3

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

Answer 3

no

Question 4

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

Answer 4

anterior medullary feeder arteries

Question 5

The posterior spinal artery is a branch of which artery?

Answer 5

the posterior inferior cerebellar artery

Question 6

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

Answer 6

it lies in the posterolateral sulcus along the spinal cord

Question 7

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

Answer 7

no

Question 8

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

Answer 8

posterior medullary feeder arteries

Question 9

What forms the arterial vasa corona above C3?

Answer 9

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

Question 10

What forms the arterial vasa corona below C6?

Answer 10

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

Question 11

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

Answer 11

intramedullary arteries

Question 12

What are the intramedullary branches of the arterial vasa corona?

Answer 12

pial perforating arteries, central/ventral/sulcal perforating arteries

Question 13

What arterial vasa corona branches supply gray matter and most of the spinal cord?

Answer 13

ventral/central/sulcal perforating arteries

Question 14

What is the primary artery supplementing the arterial vasa corona?

Answer 14

anterior medullary feeders and posterior medullary feeders

Question 15

What vessels drain the spinal cord?

Answer 15

pial veins

Question 16

What will pial veins drain into?

Answer 16

venous vasa corona

Question 17

Which vessels form the venous vasa corona?

Answer 17

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

Question 18

Which vessels will drain the venous vasa corona?

Answer 18

anterior medullary veins, posterior medullary veins

Question 19

What vessels will drain the dorsal/posterior nerve root ganglion?

Answer 19

posterior radicular veins

Question 20

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

Answer 20

anterior internal vertebral venous plexus, basivertebral vein

Question 21

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

Answer 21

posterior internal vertebral venous plexus

Question 22

What venous vessels are identified in the intervertebral foramen?

Answer 22

intervertebral veins

Question 23

What is the unique feature of veins along the spinal canal?

Answer 23

they lack the bicuspid valve of typical veins

Question 24

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

Answer 24

9 anterior and 12 posterior medullary feeder arteries