G5 Spinal Column

Question 1

Which meninges is associated with the filum terminale internum and externum?

Answer 1

Pia mater internal

Dura mater external

Question 2

Where is the lumbar cistern?

Answer 2

Between the conus medullaris and the end of the dural sac. So, between L1/L2 IV disc level and S2.

Question 3

Which meninges is associated with the denticulate ligaments?

Answer 3

Pia mater

Question 4

How many arteries run up and down the spinal cord on the posterior and anterior sides?

Answer 4

Anterior: one near the anterior fissure
Posterior: two near the origin of the rootlets

Question 5

What is the artery the is found coming off the spinal cord to the left side, at inferior thoracic level?

Answer 5

Great anterior segmental artery

Question 6

What arteries run along the rootlets near the spinal cord?

Answer 6

Radicular arteries

Question 7

What veins are associated with the spinal cord and where are they found?

Answer 7

Anterior/posterior spinal veins in the subarachnoid space.

Internal vertebral plexus of veins in the epidural space.

Question 8

What branching arteries come into the vertebral canal at the intervertebral foramen?

Answer 8

Segmental medullary arteries

Question 9

At what vertebral level is the PSIS?

Answer 9

S2

Question 10

Where is the common location for an epidural or spinal tap?

Answer 10

L4/L5 IV disc level

Question 11

What layers must a needle go through to do a spinal tap?

Answer 11

Skin/fat
thoracolumbar fascia
muscle
ligamentum flavum
dura mater