Spinal meninges

Question 1

Spinal dura mater is the outermost meningeal layer and it differs from that of the brain, how?

Answer 1

It only has one layer
The meningeal layer

Question 2

Why does the spinal dura mater only consist of one layer?

Answer 2

The periosteal layer is missing because the vertebral canal has a true periosteum

Question 3

Spinal dura mater attachments

Answer 3

Superiorly: tectorial membrane and posterior longitudinal ligament

Inferiorly: it extends up to S2 vertebral level, thus extending below the spinal cord termination (L1/L2)

Question 4

The space between the spinal dura mater and the periosteum of the vertebral column is called the

Answer 4

Epidural space

Question 5

What is the epidural space filled with?

Answer 5

loose connective and adipose tissues, and traversed by the anterior and posterior internal vertebral venous plexuses.

Question 6

Question 7

Spinal arachnoid mater is the middle meningeal layer and it is continuous with

Answer 7

arachnoid mater of the brain

Question 8

The arachnoid mater lies

Answer 8

close and beneath the spinal dura, with a narrow subdural space existing between them

Question 9

Space between the arachnoid and pia mater

Answer 9

Spinal subarachnoid space

Question 10

The spinal subarachnoid space expands at the level of the

Answer 10

conus medullaris of the spinal cord, forming the lumbar cistern

Question 11

The lumbar cistern:
Location

Answer 11

Extends from L1-S2

Question 12

The lumbar cistern:
Content

Answer 12

Dorsal and ventral rootlets of L2-Co spinal nerves (cauda equina)

Question 13

Lumbar cistern clinical significance

Answer 13

it is the site of lumbar puncture

Question 14

Innermost meningeal layer

Answer 14

Spinal pia mater

Question 15

Spinal pia mater is continuous with the

Answer 15

Cranial pia at the level of the foramen magnum

Question 16

Spinal pia mater gives off a fibrous projection from the apex of the conus medullaris called the

Answer 16

filum terminale

Question 16

Spinal pia mater contains

Answer 16

Vascular plexus for the spinal cord tissue

Question 16

filum terminale extend

Answer 16

± 20 cm downwards and attaches to the periosteum of the first coccygeal vertebra

Question 17

SPinal pia mater contains _________ ligaments

Answer 17

Denticulate ligaments

Question 18

Denticulate ligaments

Answer 18

Starting from the level of the foramen magnum to the level of vertebra T12

21 pairs of ligamentous lateral projections that pass through the arachnoid and attach to the spinal dura mater

Each pair is located halfway between the successive pairs of the spinal nerves

Position and hold the spinal cord in place

Question 19

Question 20