Spinal Cord

Question 1

The spinal cord occupie only the superior 2/3 of the vertebral canal and its conus medullaris terminates at

Answer 1

L3-T12

Question 2

Cervical enlargement

Answer 2

C4-T1

Question 3

Anterior a rami of the cervical enlargement form the

Answer 3

Brachial plexus

Question 4

Lumbosacral enlargement

Answer 4

T11-S1

Question 5

Tip of the conus medullaris

Answer 5

L4-L5 at birth

Question 6

When does caudal eminence disappear?

Answer 6

End of the embryonic period (8th week)

Question 7

Loose bundle of spinal nerve roots, arising from the kumbosacral enlargement and the conus medullaris coursing within the lumbar cistern of CSF caudal to the termination of the spinal cord

Answer 7

Cauda equina

Question 8

Vestigial remnant of the caudal part of the spinal cord

Anchor for th infrior end of the spinal cord and spinal meninges

Answer 8

Filum terminale

Question 9

Pial part of the terminal filum consists of

Answer 9

Vestiges of neural tissue
Connective tissue
Neuroglial tissue covered by pia mater

Question 10

Aka as the coccygeal ligament

Answer 10

Filum terminale externum

Question 11

Separates the spinal dura fron the periosteum covered bone and the ligaments that form the walls of the vertebral canal

Answer 11

Epidural space

Question 12

Terminate superiorly at the foramen magnum
L: IV foramina
I: sacral hiatus sealed by the sacrococcygeal ligament

Answer 12

Epidural space

Question 13

Long tubular sheath that adheres to the margion of the foramen magnum, continuous with the cranial dura mater

Answer 13

Spinal dural sac

Question 14

Nerve fibers are distributed by to the spinal dura by the

Answer 14

(Recurrent) meningeal nerves

Question 15

Tough fibrous tissue with some elastic fibers

Answer 15

Spinal dura mater

Question 16

A delicate avascular membrane composed of fibrous and elastic tissue

Answer 16

Spinal arachnoid mater

Question 17

SAM encloses the CSF-fileld subarachnoid spa e containing the

Answer 17

Spinal cord
Spinal nerve roots
Spinal ganglia

Question 18

Erroneously referred to ass the subdural space

Answer 18

dura-arachnoid interface

Question 19

Delicate strands of connective tissue that spans the subarachnoid space connecting the slinal arachnoid and pia

Answer 19

Arachnoid trabeculae

Question 20

Directly covers the roots of the spinal nerves and the spinal blood vessels and continues as the filum terminale

Answer 20

Spinal pia mater

Question 21

The spinal cord is suspended in the dural sac by the

Answer 21

filum terminale and

Denticulate ligament

Question 22

Fibrous sheet of pia extending midway between the posterior and anterior nerve roots from the lateral surfaces of the spinal cord

Answer 22

Denticulate ligament

Question 23

Enlargement of the subarachnoid space in the dural sac, caudal to the conus medulalris and containing CSF and the cauda equina

Answer 23

Lumbar cistern

Question 24

These arteries run longitudinally from the medulla of the brainstem to the conus medullaris of the spinal cord (3)

Answer 24

Posterior spinal arteries (paired)

Anterior Spinal artery

Question 25

T/F

Superior to inferior, lumbar spinal nerves increase in size while the IV foramina increase in diameter

Answer 25

False. Foramina decrease

Question 26

Withdrawal of CSF from the lumbar cistern

Answer 26

Lumbar puncture/spinal tap

Question 27

Lumbar puncture, fitted with a ______, is inserted in the

Answer 27

Stylet

Midline between the spinous process of the L3 and L4

Question 28

Supracristal plane

Answer 28

Transecting the highest point of the iliac crests

Question 29

Lumbar puncture is performed in the presence of increased intracranial pressure

T/F

Answer 29

False

Question 30

Transection of T10-L1 leads to

Answer 30

Injury in the function of the thigh muscle which may allow walking with long leg braces