Spinal Cord

Front 1

Forward slippage of the L5 vertebrae. Damages PNS only, not CNS (because spinal cord ends at L1, and cauda equina is all PNS)

Back 1

Spondolisthesis

Front 2

Damage to cauda equina, as in spondolishtesis, affects ____ only, not CNS.

Back 2

PNS

Front 3

The dural sac ends at vertebral level ___

Back 3

S2

Front 4

The continuation of the meningeal layer of cranial dura on the spinal cord is called ___

Back 4

spinal dura

Front 5

The continuation of the periosteal layer of cranial dura is ___ in the spinae.

Back 5

periosteum of the vertebrae

Front 6

There are __ pairs of spinal nerves exiting the vertebral column.

Back 6

31

Front 7

There are __ cervical spinal nerves.

Back 7

8

Front 8

Cervical spinal roots exit ___ the like-named vertebrae.

Back 8

Above

Front 9

Thoracic and Lumbar ventral roots exit ____ the vertebrae of the same level.

Back 9

below

Front 10

The presence of a ____ indicates that the peripheral sensory and motor components of a particular cord level are intact.

Back 10

normal tendon reflex

Front 11

The shoulder and lateral arm belongs to the ___ dermatome.

Back 11

C5.

Front 12

The ___ myotome abducts the shoulder. Test with the biceps brachii reflex.

Back 12

C5

Front 13

The __ dermatome is the lateral forearm.

Back 13

C6

Front 14

The ___ myotome control elbow FLEXION and wrist EXTENSION

Back 14

C6

Front 15

The C7 dermatome is the ___

Back 15

middle finger

Front 16

Test C6 tendon reflex at ___

Back 16

brachioradialis

Front 17

Test C7 tendon reflex at ___

Back 17

triceps brachii

Front 18

The __ myotome controls elbow extension and wrist flexion.

Back 18

C7

Front 19

The __ dermatome is medial knee and leg.

Back 19

L4

Front 20

The myotome for __ does knee extension.

Back 20

L4

Front 21

L4 tendon reflex is tested on the ___

Back 21

patellar tendon

Front 22

The __ dermatome is the lateral foot.

Back 22

S1

Front 23

The S1 myotome controls ___

Back 23

ankle plantar flexion

Front 24

The tendon reflex to test S1 is at the __

Back 24

Achilles tendon

Front 25

The front of the spinal cord has anterior median fissure, the posterior side has the posterior median ___

Back 25

sulcus

Front 26

The only "fissure" on the spinal cord is the anterior median fissure, the rest of the grooves are ___

Back 26

sulci

Front 27

The posterior intermediate sulcus is present at vertebral levels ___

Back 27

above T7

Front 28

The medial motor group in the ventral horn innervates ___ and is present throughout the cord.

Back 28

axial muscles

Front 29

The lateral motor group of the ventral horn innervates ___ is only present in C5-T1 and L2-S3.

Back 29

limb muscles

Front 30

The ___ motor group of the ventral horn is only present where you have brachial and lumbar plexus.

Back 30

lateral motor group

Front 31

Motor neurons for extensor muscles lie more ___ in the cell column than flexors.

Back 31

ventral

Front 32

Motor neurons for flexors lie ___ to those for extensors.

Back 32

posterior

Front 33

The more proximal the muscle group, the more ___ the neuron bodies that innervate it are within the cord.

Back 33

medial

Front 34

The nuclear columns of the posterior column includes:

Back 34

posteromarginal nucleus, substantia gelatinosa, nucleus proprius

Front 35

The posterior cell column (posteromarginal, substantia gelatinosa, nucleus proprius) extends in what parts of the spinal cord?

Back 35

Entire length

Front 36

Nucleus dorsalis/Clarke's nucleus, is present in spinal cord levels ___

Back 36

C8-L2

Front 37

Clarke's nucleus part of the ___ pathway.

Back 37

spinocerebellar pathway

Front 38

Clarke's nucleus receives afferents from ___

Back 38

muscle and tendon sensory receptors (muscle spindles, etc)

Front 39

Nucleus proprius functions in ___

Back 39

proprioception

Front 40

Substantia gelatinosa functions in ___

Back 40

pain and temprature

Front 41

The white matter between the anterior lateral sulcus and posterior lateral sulcus in the spinal cord

Back 41

Lateral funiculus

Front 42

The white matter between the posterior median and posterior lateral sulci.

Back 42

Posterior funiculus. Bilaterally is dorsal columns.

Front 43

funiculus =

Back 43

white matter of spinal cord

Front 44

Tract carrying sensory info from the lower half of the body

Back 44

fasiculus gracilis

Front 45

Tract carrying info from the upper half of the body

Back 45

fasiculus cuneatus (note, you don't see cuneatus til above T7, so it makes sense that its the one with upper half of body sensory)

Front 46

The PSNS nuclei in the lateral gray columns is in levels __

Back 46

S2-S4

Front 47

The Rubrospinal tract is a ____ tract.

Back 47

Descending motor tract

Front 48

In the spinothalamic tracts, neck to toe info is arranged ____ to ___

Back 48

medial to lateral

Front 49

In the dorsal columns, sensory info for neck to toe is arranged __ to ___

Back 49

lateral to medial

Front 50

In the lateral corticospinal tract, motor info for neck to toe is arranged __ to __.

Back 50

medial to lateral.

Front 51

The commissure at the base of the anterior median fissure in the spinal cord.

Back 51

Ventral white commissure

Front 52

The white matter tract that contains fibers from cells in the dorsal root ganglia that ascend or descend a bit before entering posterior horn.

Back 52

Lissauer's Tract/ Dorsolateral fasiculus

Front 53

Lissauer's tract contains fibers from the __

Back 53

dorsal root ganglion

Front 54

__ surround the gray matter and connect different levels of the spinal cord for integration.

Back 54

Intersegmental fibers.