Day 9 (Vertebral foramen)

Question 1

What is the 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 vertebral level will the spinal cord typically terminate?

Answer 2

L1

Question 3

At what vertebral level will the dural sac typically terminate?

Answer 3

S2

Question 4

What are the segmental arteries of the cervical spine?

Answer 4

the vertebral artery, ascending cervical artery and deep cervical artery

Question 5

What are the segmental arteries of the thoracic spine?

Answer 5

the deep cervical artery, superior (highest) intercostal artery, posterior intercostal artery and subcostal artery

Question 6

What are the segmental arteries of the lumbar spine?

Answer 6

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

Question 7

What are the segmental arteries of the fifth lumbar vertebra?

Answer 7

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

Question 8

What are the segmental arteries of the sacrum?

Answer 8

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

Question 9

What segmental levels are supplied by the vertebral artery?

Answer 9

C1-C6

Question 10

What segmental levels are supplied by the ascending cervical artery?

Answer 10

C1-C6

Question 11

What segmental levels are supplied by the deep cervical artery?

Answer 11

C7-T1

Question 12

What segmental levels are supplied by the superior (highest) intercostal artery?

Answer 12

T1, T2

Question 13

What segmental levels are supplied by the posterior intercostal artery?

Answer 13

T3-T11

Question 14

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

Answer 14

T12

Question 15

What segmental levels are supplied by the lumbar arteries?

Answer 15

L1-L4

Question 16

What segmental levels are supplied by the median (middle) sacral artery?

Answer 16

L5, S1-S5, and coccyx

Question 17

What segmental levels are supplied by the iliolumbar artery?

Answer 17

L5, S1-S5, and coccyx

Question 18

Which vertebra has the greatest number of segmental arteries associated with it?

Answer 18

L5

Question 19

What are the segmental arteries for L5?

Answer 19

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

Question 20

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

Answer 20

dorsospinal artery

Question 21

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

Answer 21

spinal artery

Question 22

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

Answer 22

spinal artery

Question 23

What are the branches of the spinal artery?

Answer 23

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 24

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

Answer 24

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

Question 25

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

Answer 25

anterior spinal canal artery & plexus

Question 26

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

Answer 26

posterior spinal canal artery & plexus

Question 27

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

Answer 27

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

Question 28

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

Answer 28

anterior radicular artery

Question 29

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

Answer 29

posterior radicular artery