Vertebral Foramen

Question 0

At what level will the spinal cord typically terminate?

Answer 0

L1

Question 1

What typical shape/outline of the vertebral foramen at each region of the spinal column/vertebral column?

Answer 1

cervical- triangular; thoracic - oval; lumbar - triangular; sacrum - triangular

Question 2

At what level will the dural sac typically terminate?

Answer 2

S2

Question 3

What are the segmental arteries of the cervical spine?

Answer 3

the vertebral artery, ascending cervical artery and deep cervical artery

Question 4

What are the segmental arteries of the sacrum?

Answer 4

the iliolumbar artery, lateral sacral artery and median (middle) sacral artery

Question 5

What segmental levels are supplied by the vertebral artery?

Answer 5

c1-c6

Question 6

What segmental levels are supplied by the ascending cervical artery?

Answer 6

c1-c6

Question 7

What segmental level(s) is/are supplied by the subcostal artery?

Answer 7

T12

Question 8

What branch of the segmental artery supplied the vertebra and the paravertebral region?

Answer 8

dorsospinal artery

Question 9

Which artery is primarily observed in the distal part of the intervertebral foramen?

Answer 9

spinal artery

Question 10

which branch of the dorsospinal artery will penetrate the meninges to enter subarachnoid space?

Answer 10

spinal artery

Question 11

What are the branches of the spinal artery?

Answer 11

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

Question 12

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

Answer 12

osseous arteries, anterior spinal canal artery, posterior spinal canal artery

Question 13

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

Answer 13

anterior spinal canal artery and plexus

Question 14

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

Answer 14

posterior spinal canal artery and plexus

Question 15

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

Answer 15

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

Question 16

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

Answer 16

posterior radicular artery

Question 17

Which vessel will supply the ventral/anterior nerve rootlet and nerve root?

Answer 17

anterior radicular artery

Question 18

What forms the arterial vasa corona below C6?

Answer 18

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

Question 19

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

Answer 19

intramedullary arteries

Question 20

What are the intramedullary branches of the arterial vasa corona?

Answer 20

pial perforating arteries, central/ventral/sulcal perforating arteries

Question 21

What intramedullary branches supply about one third of the spinal cord?

Answer 21

pial perforting arteries

Question 22

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

Answer 22

ventral/central/sulcal perforating arteries

Question 23

What is the source for pial perforating arteries?

Answer 23

the pial plexus

Question 24

What is the primary artery supplementing the arterial vasa corona?

Answer 24

anterior medullary feeders and posterior medullar feeders

Question 25

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

Answer 25

9 anterior and 12 posterior medullary feeder arteries

Question 26

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

Answer 26

anterior spinal artery

Question 27

the anterior spinal artery is a branch of which artery?

Answer 27

the vertebral artery

Question 28

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

Answer 28

no

Question 29

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 29

anterior medullary feeder arteries

Question 30

The posterior spinal artery is a branch of which artery?

Answer 30

the posterior inferior cerebellar artery

Question 31

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

Answer 31

it lies in the posterolateral sulcus along the spinal cord

Question 32

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

Answer 32

no

Question 33

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

Answer 33

posterior medullary feeder arteries

Question 34

What forms the arterial vasa corona above c3?

Answer 34

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

Question 35

What vessels drain the spinal cord?

Answer 35

pail veins

Question 36

What will pial veins drain into?

Answer 36

venous vasa corona

Question 37

Which vessels form the venous vasa corona?

Answer 37

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

Question 38

which vessels will drain the venous vasa corona?

Answer 38

anterior medullary veins, posterior medullary veins

Question 39

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

Answer 39

posterior radicular veins?

Question 40

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

Answer 40

anterior internal vertebral venous plexus, basivertebral ven

Question 41

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

Answer 41

posterior internal vertebral venous plexus

Question 42

what venous vessels are identified int he intervertebral foramen?

Answer 42

intervertebral veins

Question 43

Which of the contents of the epidural space are more likely located near or around the posterior longitudinal ligament?

Answer 43

anterior spinal canal artery & plexus anterior internal vertebral venous plexus basivertebral vein recurrent meningeal/sinu-vertebral/sinus vertebral nerve Hofmann/ anterior dural/miningovertebral ligaments

Question 44

what is the name given to the fluid with the subarachnoid space?

Answer 44

cerebrospinal fluid

Question 45

What is the name given to the fluid present within the subdural space?

Answer 45

serous flid

Question 46

what is the name given to the lateral extension of pia mater along the spinal cord?

Answer 46

dentate (denticulate) ligament

Question 47

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

Answer 47

they lack the bicuspid valve of typical veins?