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Neuro Exam I > Organization of Spinal Cord > Flashcards

Organization of Spinal Cord Flashcards

1
Q

where is cervical enlargement located

A

C5-T1

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2
Q

where is lumbosacral enlargement

A

L2-S3

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3
Q

filum terminale

A

continuation of spinal cord from L2 - S2/3

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4
Q

where do dura and pia mater attach

A

S2-3

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5
Q

where do you do a lumba rpunction

A

L3/L4

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6
Q

where does cervical spinal n 8 exit

A

below cervical vertebra C7

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7
Q

spinal nerve

A

dorsal + ventral root

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8
Q

what does gray matter contain

A

neuron cell bodies

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9
Q

what is white matter arranged into

A

tracts, fasciculi, or commissures

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10
Q

what are tracts, fasciculi or commissures

A

collection of myelinated axons with similar functions and similar origin and termination

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11
Q

commissures

A

tracts/fasciculi that cross from side of the spinal cord to the other

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12
Q

whre is most of the white matter

A

cerival region

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13
Q

where is most gray matter

A

cervical adn lumbar enlargements

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14
Q

what are the 3 main regions of gray matter

A

dorsal
ventral
lateral horns

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15
Q

what are the 3 main lamina of gray matter

A

substantia gelatinosa, nucleus proprius, motor nuclie

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16
Q

what are teh 3 mian columns of gray matter

A

intermediolateral cell colum
clark’s column
sacral parasympathetic nuclus

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17
Q

dorsal horn function

A

sensory input

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18
Q

what does dorsal horn contain

A

central processes of pseudounipolar neurons whose cell body is in dorsal root ganglia

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19
Q

function of ventral horn

A

motor output

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20
Q

what does ventral horn contain

A

cell bodies of motor neurons whose axons innervate skeletal muscle

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21
Q

function of lateral horn

A

preganglionic sympahtics

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22
Q

what does lateral horn contain

A

preganglionic sympathetic cell bodies

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23
Q

function of interneurons

A

synapse with motor neuron cell bodies in ventral horn

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24
Q

lateral motor aons innervate what

A

limbs

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25
Q

medial motor axons innervate what

A

axial skeleton

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26
Q

tract cells

A

give off processes

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27
Q

anterior exons

A

extensors

28
Q

posterior ansons

A

flexons

29
Q

substantia gelatinosa (II) function

A

modulate nociception

30
Q

nucleus proprius (IV, V, VI)

A

synapse of cell bodies of second order neurons of spinothalamic tract

31
Q

motor nuclei (IX)

A

motor neurons whose axons innervate skeletal muscle

32
Q

where is nucleus dorsalis (clarke’s column) located

A

C8-L3

33
Q

what is in clarke’s colum

A

cell bodies of dorsal spinocerebellar tract

34
Q

where is lateral horn located

A

T1-L2(30

35
Q

WHAT DOES LATERAL HORN CONTAIN

A

PREGANGLIONIC CELL BODIES OF SYMPATHETIC NEURONS

36
Q

WHERE IS SACRAL PARASYMPATHIETC NUCLEUS LOCATED

A

s2-4

37
Q

what does sacral parasympathetic nucleius contain

A

preganglionic parasympathetic neuron cell bodies

38
Q

what are teh 3 major columns of the spinal cord

A

dorsal lateral and bentral funiculus

39
Q

function of dorsal funiculus

A

proproception, virbratory sense, crude touch

40
Q

what is the dorsal funiculus arranged itno

A

fasciculus cuneatus, facsiculus graclisis

41
Q

where is fasciculus cuneatus located

A

C1-T6

42
Q

what does fasciculus cuneatus get input from

A

upper trunk and upper limb

43
Q

where is fasciculus gracilis located

A

all spinal cord levels

44
Q

where does fasciuclus gracilis get input from

A

lower trunk and lower limb

45
Q

where does fasciuclus gracilis get input from

A

lower trunk and lower limb

46
Q

where is lateral funiculus prominante

A

cerbial levels

47
Q

where does alteral funiculus originate and terminate

A

o-cortex

t- spinal cord

48
Q

function of lateral funiculus

A

motor

49
Q

ventral spinocerebellar tract

A

ascneding tract
o - spinal cord
t- cerebellum

50
Q

functino of ventral spinocerebellar tract

A

sensory info from extremies to cerebellum for position

51
Q

dorsal spinocerebellar tract

A

ascending tract
o - spinal cord
t- cerebellum

52
Q

function of dorsal spinocerebellar tract

A

position sense

53
Q

spinothalamic tract

A

ascending tract
o - spinal cord
t-thalamus

54
Q

function of spinothalamic tact

A

pain, temp, touch

55
Q

what does spinothalamic tract arise from

A

nucleus propiuse

56
Q

what does spinothalamic tract ascend into

A

ventrolateral funiculus

57
Q

anterior corticospinal tract

A

descending

58
Q

function of anterior corticospinal tract

A

motor

59
Q

dorsolateral tract of lissaeuer

A

connection between spinal cord surface and tip of dorsal horn

60
Q

what does dorsolateral tract of lisaure contain

A

central processes of sensory pseudounifpolar nueonrs

61
Q

anterior white commissure

A

ttract that cross spinal cord

62
Q

where is teh least white matter found

A

LS region

63
Q

what type of inenrvatino do pseudounipolar neurons get

A

sensory afferent

64
Q

what do pseudounipolar neurons synpatse with

A

interneurons or preganglionic sympahtetic neurons

65
Q

what do interneurons synpase with

A

motor nuclei in ventral horn motor nucli

66
Q

what type of innervation do motor neuron get

A

effect motor innervation

67
Q

what type of innervation do motor neuron get

A

efferent motor innervation

Neuro Exam I (10 decks)

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