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spinal anatomy > tracts > Flashcards

tracts Flashcards

1
Q

rubrospinal

A

prox flexors

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2
Q

reticulospinal

A

extensors of back and arms

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3
Q

tectospinal

A

neck mm, light and sound reflex

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4
Q

inf colliculus

A

sound

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5
Q

sup colliculus

A

light

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6
Q

vestibulospinal (from vestibular nuclei)

A

extensors of back and legs

eyes via MLF

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7
Q

vestibulospinal (from cerebellum)

A

dentate nuc -> ant horn -> gamma motor neuron -> intrafusal fiber for tone

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8
Q

lateral corticospinal

A

decussates at medullary pyramids for distal flexors

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9
Q

ventral corticospinal

A

ducussates at spinal level for flexors of trunk

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10
Q

spinothalamic receptors

A

unmyelniated c fibers, free naked nerve endings

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11
Q

lateral spinothalamic

A

pain and temp

rexed 2 -> rexed 7 -> lateral spinothalamic tract -> vpl of contralat thalamus -> contralat cortex

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12
Q

where does lateral spinothalamic synapse

A

post horn/tractof lissauer/rexed lamina 2

substantia gelatinosa - blocks pain

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13
Q

syringomyelia

A

dilation of central canal at c5/6
cuts spinothalamic tract
cape/shawl dist

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14
Q

ventral spinothalamic

A

crude touch

rexed 2 -> rexed 7 -> ventral spinothalamic tract -> vpl of contralat thalamus -> contralat cortex

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15
Q

fast pain fibers

A

compression of A-beta

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16
Q

DCML

A

conscious proprioception, vibration, joint position, 2 point discrim
A-beta fibers
decussates at medial lemniscus in medulla, vpl of contralat thalamus, contralat cortex

17
Q

meissners/merkels receptors

A

accurate touch

A-beta fibers

18
Q

pacinion receptor

A

vibration

A-beta fibers

19
Q

ruffini

A

joint position

A-beta fibers

20
Q

gracilis

A

legs

21
Q

cuneatus

A

arms

spinal anatomy (13 decks)

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