anatomy : spinal cord

Question 1

spinal cord length

runs thru

Answer 1

foramen magnum to L1 OR L2

vertebral canal of vertebral column

Question 2

functions of spinal cord

Answer 2

A- sensory and motor innervation of whole body inferior to head via spinal nerve

B-major centres for reflexes

Question 3

Adult spinal cord
extends to
narrows into

Answer 3

conus medullaris

cuada equina tethered to coccyx

Question 3

Spinal cord segments

Answer 3

sup to their corresponding spinal nerves emerging from the intervertebral foramina

Question 4

Denticulate ligaments

Answer 4

lateral shelves of pia mater anchoring to dura mater

Question 5

Spinal nerves lie

Answer 5

intervertebral foramina

Question 6

Spinal nerves : Divided based on vertebral locations
 cervical
 thoracic
 lumbar
sacral
coccygeal

Answer 6

-8
12
5
5
1

Question 7

cauda equina

Answer 7

collection of nerve roots. and the inferior end of vertebral canal

Question 8

✓ Cervical spinal nerves exit from

Answer 8

above the respective vertebra

EXAMPLE ; spinal nerve root 1 from above C1
spinal nerve root 2 from between C1 and C2

Question 9

3 potential spaces in spinal cord

Answer 9

epidural - outside dura
subdural -between dura and arachnoid
subarachnoid - deep to arachnoid

Question 10

Coronal section of the spinal cord:
Dorsal half of “H”
Ventral half of “H”

Answer 10

• cell bodies of interneurons

- ‘’ ‘’ of motors nuerons