Anatomy: spinal cord - meninges

Question 1

Label the following:

Answer 1

Question 2

Are these potential spaces or actual spaces?
- Epidural space
- Subdural space
- Subarachnoid space

Answer 2

Epidural space: actual space
Subdural space: potential space
Subarachnoid space: actual space

Question 3

Epidural space
- What can you find within it

Answer 3

Fatty tissue
Vascular - arteries, veins, lymphatics
DRG + mixed spinal nerves

Question 4

Epidural space
- What is its main clinical application

Answer 4

Anaesthetics
- Inject into epidural space (hydrophobic drugs dissolve in fatty tissue)
- Targets and blcoks sensory inforamtion in the DRG

Question 5

STABILISATION OF THE SPINAL CORD
The end of the spinal cord is called the _______ ____________ . It terminates at vertebral levels __/__ in adults, and __/__ in children.

The nerve roots below this structure is called the _______ ________.

Answer 5

The end of the spinal cord is called the CONUS MEDULLARIS. It terminates at vertebral levels L1/L2 in adults, and L3/L4 in children.

The nerve roots below this structure is called the _______ ________.

Question 6

STABILISATION OF THE SPINAL CORD
The extension of dura mater to spinal cord level S2 is called the _______ ______
- Which is also known as:
- What structures does it contain?

Answer 6

Dural sac (aka. thecal sac)
The lumbar cistern - CSF and cauda equina

Question 7

STABILISATION OF THE SPINAL CORD
What is the clinical application of the lumbar cistern?

Answer 7

It’s the ideal site for lumbar puncture - can get CSF without piercing the SC directly

Question 8

STABILISATION OF THE SPINAL CORD
The extension of pia mater from the conus medullaris (termination of SC) to the dural sac is called the _______ _________ _________.

The extension of pia mater from the dural sac to the sacrum is called the _______ _________ _________.

Answer 8

Filum terminale interna
Filum terminale externa

Question 9

STABILISATION OF THE SPINAL CORD
Describe the denticulate ligaments

Answer 9

Lateral extensions of pia mater, which pierce the arachnoid mater and attach to the dura mater