Spinal Cord

Question 1

comprises the CNS

Answer 1

brain and spinal cord

Question 2

both brain and spinal cord have the same membranous coverings called –

Answer 2

meninges

Question 3

the spinal cord and its meninges are in the –

Answer 3

vertebral canal

Question 4

spinal cord is a major – and conduction pathway between the body and the brain

Answer 4

reflex center

Question 5

meninges from superficial to deep

Answer 5

dura mater, arachoid mater, pia mater

Question 6

superficial to dura mater

Answer 6

epidural space

Question 7

between dura mater and arachnoid mater

Answer 7

subdural space

Question 8

between arachnoid mater and pia mater

Answer 8

subarachnoid space

Question 9

subarachnoid space contains – which provides a protective cushion for the spinal cord

Answer 9

cerebrospinal fluid

Question 10

hematomas can occurs in – and –

Answer 10

subdural and epidural spaces

Question 11

a serrated tooth-like ligament extending between the dorsal and ventral roots which helps anchor the spinal cord within the dural sac

Answer 11

denticulate ligament (formed of pia mater)

Question 12

denticulate ligament provides – for the spinal cord

Answer 12

lateral stability

Question 13

end of the spinal cord

Answer 13

Co1

Question 14

the segmental arrangement of the spinal cord is reflected on the surface of the body as –

Answer 14

dermatomes

Question 15

dorsal rami nerves innervates the – circumference of the body wall (soma)

Answer 15

posterior 1/3rd

Question 16

ventral rami nerves innervate – circumference of the body wall (soma)

Answer 16

antero-lateral 2/3rds

Question 17

spinal cord segment is a section of spinal cord that gives rise to – on each side

Answer 17

pair of spinal nerves

Question 18

strip of skin innervated by sensory fibers from a single spinal cord segment

Answer 18

dermatome

Question 19

T/F: the entire body can be mapped as a series of segmental dermatomes

Answer 19

true

Question 20

testing a dermatome for – can give info about the integrity of its spinal cord segment, spinal nerve, or spinal nerve roots

Answer 20

sensation

Question 21

spinal cord has a – which controls the upper limb

Answer 21

cervical enlargement

Question 22

spinal cord has a – which controls the lower limb

Answer 22

lumbar enlargement

Question 23

– arises from the cervical enlargement

Answer 23

brachial plexus

Question 24

– arises from the lumbar enlargement

Answer 24

lumbosacral plexus

Question 25

spinal cord ends opposite the – vertebra

Answer 25

L2

Question 26

as spinal cord proceeds inferiorly, the dorsal and ventral roots must get progressively – and angled more inferiorly to reach their corresponding vertebrae where they will form a spinal nerve

Answer 26

longer

Question 27

toward the end of the spinal cord, the dorsal and ventral roots form –

Answer 27

cauda equina

Question 28

in the – region the nerve roots emerge above their corresponding vertebra

Answer 28

cervical

Question 29

C8 nerve roots emerge above – and after this the nerve roots emerge below their corresponding vertebra

Answer 29

T1

Question 30

though the spinal cord ends at L2, the – continues inferiorly and form the filum terminale

Answer 30

pia mater

Question 31

ligament-like structure that eventually anchors to the coccyx along the dura and arachnoid mater forming the coccygeal ligament

Answer 31

filum terminale

Question 32

coccygeal ligament provide – for spinal cord

Answer 32

longitudinal stability

Question 33

dural sac and subarachnoid space ends opposite –

Answer 33

S2

Question 34

as spinal cord ends, it tapers down to form a cone-like structure called –

Answer 34

conus medullaris

Question 35

conus medullaris ends at – vertebrae level

Answer 35

L2

Question 36

surrounding the conus medullaris are – that proceed inferiorly

Answer 36

dorsal and ventral roots

Question 37

dorsal and ventral roots that inferiorly surround the conus medullaris

Answer 37

cauda equina

Question 38

extends from the conus medullaris and through the cauda equina

Answer 38

filum terminale

Question 39

filum terminale continues inferiorly to anchor to the–

Answer 39

coccyx

Question 40

spinal cord is supplied by –

Answer 40

1 ant. spinal artery and 2 post. spinal arteries and radicular arteries

Question 41

ant. and post. spinal arteries arise from the –

Answer 41

vertebrae arteries

Question 42

radicular arteries arise from segmental spinal arteries which arise from –

Answer 42

post. intercostal arteries

Question 43

spinal cord is drained by –

Answer 43

3 ant. and 3. post. spinal veins

Question 44

vines draining the spinal cord and vertebrae form the –

Answer 44

internal vertebral venous plexus

Question 45

internal vertebral venous plexus is a network of valveless veins which is continuous with the – within the skull

Answer 45

cranial dural venous sinuses

Question 46

internal vertebral venous plexus is contained within the – in the epidural space of the vertebral canal

Answer 46

areolar tissue

Question 47

spinal veins are valveless so it provides a pathway for infection between the – and lower parts of the body

Answer 47

internal cranium