spinal cord and blood supply of cns

Question 1

spinal meninges list

Answer 1

• dura mater
• arachnoid mater
• pia mater

Question 2

is the spinal extradural space a potential or genuine space

Answer 2

geniune space

Question 3

synonym for extradural space

Answer 3

epidural space

Question 4

the spinal cord ends at …

Answer 4

the vertebrae level L1/L2

Question 5

the spinal subarachnoid space ends at …

Answer 5

the vertebrae level S1/S2

Question 6

lumbar cistern

Answer 6

the part of the spinal subarachnoid space that extends below the spinal cord

Question 7

cauda equina

Answer 7

nerve roots traveling from the spinal cord to the intervertebral foramina below the vertebrae level L2

Question 8

where does the cauda equina lie

Answer 8

in the lumbar cistern

Question 9

spinal pia mater features

Answer 9

• linea splendens
• ligament denticula
• filum terminale

Question 10

where do the anterior nerve rootlets emerge from

Answer 10

anterolateral sulcus

Question 11

anterior nerve roots parts

Answer 11

• anterior nerve rootlets
• anterolateral sulcus

Question 12

where do the posterior nerve rootlets emerge from

Answer 12

posterolateral sulcus

Question 13

posterior nerve roots parts

Answer 13

• posterior nerve rootlets
• posterolateral sulcus

Question 14

spinal nerve parts

Answer 14

anterior and posterior nerve roots

Question 15

where do anterior and posterior nerve roots unite to become spinal nerves

Answer 15

intervertebral foramen

Question 16

the Wiegert stain dyes …

Answer 16

myelin and reflects the thickness of the myelin sheath around the nerve

Question 17

are the posterior columns highly myelinated

Answer 17

yes

Question 18

are the spinocerebellar tracts highly myelinated

Answer 18

yes

Question 19

are the spinothalamic tracts highly myelinated

Answer 19

no

Question 20

blood supply of the spinal cord

Answer 20

anterior and posterior spinal arteries

Question 21

artery of Adamciewicz

Answer 21

the only major arterial supply supplying the anterior spinal artery along the lower thoracic, lumbar, and sacral segments of the spinal cord

Question 22

clinical significance of the artery of Adamciewicz

Answer 22

• injury to this artery can cause neurologic damage (fecal and urinary incontinence, impaired motor function)
• sensory function is usually preserved

Question 23

dura mater

Answer 23

Question 24

arachnoid mater

Answer 24

Question 25

pia mater

Answer 25

Question 26

conus medullaris

Answer 26

Question 27

at what vertebral level is the conus medullaris typically found at

Answer 27

L1

Question 28

cauda equina

Answer 28

Question 29

filum terminale

Answer 29

Question 30

denticulate ligaments

Answer 30

Question 31

linea splendens

Answer 31

Question 32

cervical and lumbar enlargements

Answer 32

Question 33

anterior and posterior nerve rootlets

Answer 33

Question 34

spinal nerves

Answer 34

Question 35

anterior and posterior spinal arteries

Answer 35

Question 36

anterolateral sulcus

Answer 36

Question 37

what emerges at the anterolateral sulcus

Answer 37

rootlets of CNXII (the hypoglossal nerve)

Question 38

posterolateral sulcus

Answer 38

Question 39

what emerges at the posterolateral sulcus

Answer 39

posterior or sensory spinal nerves rootlets

Question 40

circle of willis

Answer 40

Question 41

which arteries contribute to the circle of willis

Answer 41

• two internal carotid arteries
• two vertebral arteries

Question 42

internal carotid arteries (circle of willis)

Answer 42

Question 43

vertebral arteries (circle of willis)

Answer 43