Gross Topography of the Spinal Cord

Question 1

The spinal cord:

Answer 1

conduction pathway
Lies in vertebral foramen
Provides Protection for: Vertebrae, muscles, ligaments, meninges, CSF

Question 2

The subarachnoid layer is continuous:

Answer 2

Through the brain and spinal cord

Question 3

Spinal cord begins at:

Answer 3

Pyramidal decussation and ends at L2 (dural sac)

Question 4

What is the lumbar cistern:

Answer 4

Area between end of spinal cord and end of dural sac

Question 5

Film terminale:

Answer 5

Dural attachment to coccyx

Question 6

What are the primary spinal Curves:

Answer 6

Thoracic and Sacral

Question 7

What are the secondary spinal curves:

Answer 7

Cervical (hold head up)

Lumbosacral (crawling)

Question 8

Which grows faster the vertebral column or spinal cord?

Answer 8

Vertebral column grows faster than cord

Newborn: L2-3
Adult: L2

Question 9

Spinal Nerves:

Answer 9

31 pairs
8 Cervical
12 Thoracic
5 Lumbar
5 Saccral
1 Coccygeal

Question 10

C1-7 Exit:

Answer 10

above vertebrae of same #

Question 11

After C7 the nerves will exit:

Answer 11

below vertebrae of same #

Question 12

Conus Medullaris:

Answer 12

L2-3 (end of spinal cord)

Question 13

Film Terminale (Internis and externis)

Answer 13

internis- pia comes off of spinal cord
Externis: Dura

Teather cord down to prevent damage

Question 14

What is Tethered Cord Syndrome:

Answer 14

Common in those with spina bifida, it’s the stretching of the spinal cord.

Causes: disturbed or improper growth of neural tube during fetal development; Presence of spina bifida; Spinal cord trauma

Causes sensation issue in lower extremities and may cause spinal N damage if left untreated

Question 15

Denticulate Ligament is responsible for:

Answer 15

Helping prevent excessive movement

Question 16

In adults, each spinal n. maintains it’s relationship with it’s

Answer 16

Somite

Question 17

Lumbar Puncture:

Answer 17

L4-5 (no chance of damaging spinal cord) can get CSF sample

Question 18

Epidural block:

Answer 18

L4-5 (administer anesthesia)

Puncturing the Dura: leads to strong headaches

Question 19

Anterior median fissure is associated with:

Answer 19

Anterior spinal Artery

Question 20

Anterolateral sulcus (2X) is associated with

Answer 20

Ventral rootlets emerge

Question 21

Anterior funiculus is associated with:

Answer 21

Ascending and descending tracts

Question 22

What creates the posterior funiculus?

Answer 22

Posterior median and lateral sulcus

Question 23

Post median sulcus is:

Answer 23

Remnant, splits funiculi

Question 24

Posterolateral sulcus:

Answer 24

Dorsal rootlets emerge

Question 25

Posterior intermediate sulcus:

Answer 25

separates fasciculi

Question 26

Fasciculus grailis

Answer 26

Legs, Sensory (DC-ML) have one on either side

Question 27

Fasciculus cuneatus:

Answer 27

Neck, Trunk, and arms, sensory (DC_ML)

Question 28

Internal Strcuture: Grey matter:

Answer 28

Horns
Grey commissure
Central Canal

Question 29

Dorsal Horns are associated with:

Answer 29

Sensory neurons
LIssauer’s track: CP
SG and marginal Zone: primary neuron for STT?

Question 30

Ventral horns are associated with

Answer 30

Motor neurons

Question 31

LH/Intermediate zone is associated with:

Answer 31

IML

Clarke’s N.

Question 32

Posterior Horn zone

Answer 32

I-VI

Question 33

Intermediate zone:

Answer 33

VII (IML, Clarke’s nucleus)

Lateral zone

Question 34

Anterior horn Zone:

Answer 34

VIII-IX

Question 35

Central Canal zone:

Answer 35

X– Surrounds central canal