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CNS > [ANAT] ASCENDING TRACTS > Flashcards

[ANAT] ASCENDING TRACTS Flashcards

1
Q

Anterolateral system carries

A

cutaneous sensations

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2
Q

lemniscal system carries

A

deep sensations

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3
Q

anterolateral system tracts

A

lateral spinothalamic
ventral spinothalamic

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4
Q

pathway for pain & temp from BODY

A

Fast: DRG–>lamina I, IV-VIII–> VPLN
slow; DRG–> Lamina II–> VPLN

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5
Q

A-delta & C fibers run in

A

Lissauer’s tract

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6
Q

spinothalamic lamination

A

cervical= medial
sacral= lateral

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7
Q

neospinothalamic tract ascends in brainstem as

A

spinal leminscus

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8
Q

neospinothalamic tract terminates in

A

VPLN(–>postcentral gyrus)

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9
Q

paleospinothalamic tract terminates in

A

intralaminar nucleus of thalamus

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10
Q

paleospinothalamic tract sends collaterals to

A

RF

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11
Q

axons of lamina II ascend in which tract

A

spinoreticular tract

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12
Q

discriminative component of pain ends in

A

postcentral gyrus (SMI)

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13
Q

the affective component of pain ens in

A

anterior cingulate cortex

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14
Q

3rd order neuron of discriminative component of pain

A

VPLN

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15
Q

3rd order neuron of affective component of pain

A

intralaminar nucleus

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16
Q

pathway of pain & temp from FACE

A

V ganglion–>Spinal nucleus–>VPMN

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17
Q

lamina of crude touch & pressure sensations

A

IV-VII

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18
Q

cervical fibers of crude touch and pressure lie

A

medially

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19
Q

sacral fibers of crude touch and pressure lie

A

laterally

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20
Q

lamina IV-VII joins

A

medial leminscus

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21
Q

pathway of crude touch & pressure

A

DRG–>lamina IV-VII–> VPLN

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22
Q

fibers of arousal terminate in

A

intralaminar nucleus & midline nuclei of thalamus

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23
Q

spinoreticular fibers terminate in

A

pontomedullary RF

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24
Q

spinotectal tract is responsible for

A

spinovisual reflexes

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25
Q

spinoreticulothalamocortical pathway is route for

A

slow dull aching pain

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26
Q

spinotectal tract terminates in

A

superior colliculi

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27
Q

gracile tract lies

A

medially

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28
Q

cuneate tract lies

A

laterally

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29
Q

medial leminsci lamination

A

sacral& coccygeal=lateral
cervical= medial

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30
Q

gracile tract carries sensations from

A

below T6

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31
Q

cuneate tract carries sensations from

A

above T6

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32
Q

gracile & cuneate collaterals

A

septomarginal (G)
comma shaped tract (C)

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33
Q

cuneo-cerebellar fibers are?
they pass to?

A

axons of the accessory cuneate nucleus
cerebellum

34
Q

gracile & cuneate nuclei axons form?

A

internal arcuate fibers

35
Q

dorsal column pathway

A

DRG–> G&C nuclei–> VPLN

36
Q

axons of accessory cuneate nucleus form

A

cuneocerebellar tract (external arcuate fibers)

37
Q

post spinocerebellar tract carries proprioception from

A

LL & Trunk

38
Q

ant spinocerebellar tract carries proprioception from

39
Q

spinoolivary tract carries proprioception from

40
Q

cuneocerebellar spinocerebellar tract carries proprioception from

41
Q

post spinocerebellar tract enters cerebellum via

42
Q

ant spinocerebellar tract enters cerebellum via

43
Q

spinoolivary tract enters cerebellum via

44
Q

cuneocerebellar tract enters cerebellum via

45
Q

central processes of anterior spinocerebellar tract end on

A

lamina V-VII

46
Q

origin of corticospinal tract

A

area 4
area 6
SMI–>terminate on contralat dorsal horn

47
Q

corticospinal tract lamination

A

CC= face is lowermost & foot is most medial
IC= face muscles in genu, UL in most anterior & LL in most posterior
MB & SC= cervical is medial & sacral is lateral

48
Q

corticospinal tract course

A

cc–>corona radiata–>post limb IC–>crus cerebri–>basis pontis–>pyramid of medulla–> lateral AHCs or medial AHCs

49
Q

crossed corticospinal tract fibers end on

A

lateral AHCs

50
Q

uncrossed corticospinal tract fibers end on

A

medial AHCs

51
Q

uncrossed corticospinal tract fibers descend in spinal cord as

A

anterior corticospinal

52
Q

crossed corticospinal tract fibers descend in spinal cord as

A

lateral corticospinal

53
Q

lateral corticospinal tract supplies

54
Q

corticonuclear fibers pass through

A

genu of IC

55
Q

ipsilateral corticospinal tract fibers join?
this is important why?

A

lateral corticospinal tract
helps in recovery in UMNL

56
Q

anterior corticospinal tract & ipsilateral corticospinal tract supply

A

abdominal & respiratory muscles

57
Q

corticonuclear tract controls

A

muscles of head

58
Q

corticonuclear tract terminates on?

A

motor nuclei bilaterally

59
Q

exceptions of double control of corticonuclear tract

A

facial nuclei (lower part)
hypoglossal nucleus (genioglossus)

60
Q

muscles receiving contralateral corticonuclear fibers

A

lower facial muscles
genioglossus

61
Q

medial vestibulospinal tract origin

A

lateral vestibulospinal tract

62
Q

medial reticulospinal tract origin

63
Q

lateral reticulospinal tract origin

64
Q

tectospinal tract origin

65
Q

rubrospinal tract origin

66
Q

crossing of tectospinal tract

67
Q

crossing of rubrospinal tract

68
Q

function of tectospinal

69
Q

rubrospinal tract function

70
Q

crossing of medial vestibulospinal tract

71
Q

crossing of lateral vestibulospinal

72
Q

site of medial vestibulospinal tract

73
Q

site of lateral vestibulospinal

74
Q

site of medial reticulospinal

75
Q

site of lateral reticulopsinal

76
Q

end of tectospinal

77
Q

rubrospinal end

78
Q

tectospinal site

79
Q

rubrospinal site

80
Q

medial vestibulospinal tract

CNS (29 decks)

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