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NPTE > Spinal Tracts > Flashcards

Spinal Tracts Flashcards

1
Q

Descending Spinal Tracts

A
  • Anterior corticospinal
  • Lateral corticospinal
  • Reticulospinal
  • Rubrospinal
  • Tectpspinal
  • Vestibulospinal
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2
Q

Anterior corticospinal tract

A

(Largest tract) Pyramidal motor tract:

Ipsilateral voluntary, discrete, skilled movements

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3
Q

Lateral corticospinal tract

A

(Largest tract) Pyramidal motor tract:

Contralateral voluntary fine movement

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4
Q

Reticulospinal tract

A

Extrapyramidal motor tract:

Facilitation/inhibition of voluntary and reflex activity –> alpha and gamma motor neurons

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5
Q

Rubrospinal tract

A

Extrapyramidal motor tract:

  • Motor input of gross postural tone
  • Facilitating activity of flexor mm
  • Inhibiting activity of extensor mm
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6
Q

Tectospinal tract

A

Extrapyramidal motor tract:

  • Contralateral postural muscle tone assoc w/ auditory/visual stimuli
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7
Q

Vestibulospinal tract

A

Extrapyramidal motor tract:

  • Ipsilateral gross postural adjustments following head mvmts
  • Facilitating activity of extensor mm
  • Inhibiting activity of flexor mm
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8
Q

Damage to extrapyramidal tracts results in?

A

Significant paralysis
Hypertonicity
Exaggerated DTR
Clasp-knife reaction

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9
Q

Damage to pyramidal tracts results in?

A

Results:

  • (+) Babinski sign
  • Absent superficial abdomina reflexes, cremasteric reflex
  • Loss of fine motor or skilled voluntary mvmt
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10
Q

Ascending Spinal Tracts

A 
Fasciculus cuneatus (post or dorsal column)
Fasciculus gracilis (post or dorsal column)
Dorsal spinocerebellar
Ventral spinocerebellar
Spino-olivary
Spinoreticular
Spinotectal
Anterior spinothalamic
Lateral spinothalamic
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11
Q

Fasciculus cuneatus (dorsal column)

A

Sensory

Trunk, neck, and UE:

  • Proprio
  • Vibration
  • 2-pt discrim
  • Graphesthesia
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12
Q

Fasciculus gracilis (dorsal column)

A

Sensory

Trunk and LE:

  • Proprio
  • 2-pt discrim
  • Vibration
  • Graphesthesia
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13
Q

Dorsal spinocerebellar tract

A

Sensory

Ascends to cerebellum

Ipsilateral subconscious proprioception
Tension in muscles
Joint sense
Posture of trunk and LEs

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14
Q

Ventral spinocerebellar tract

A

Sensory

Ascends to cerebellum

Ipsilateral subconscious proprioception
Tension in muscles
Joint sense
Posture of trunk, UEs, and LEs

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15
Q

Spino-olivary tract

A

Ascends to cerebellum

Cutaneous and proprioceptive organ info

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16
Q

Spinoreticular tract

A

To reticular formation

Influences levels of consciousness

17
Q

Spinotectal tract

A

Spinovisual reflexes

Assists w/ mvmt of eyes and head towards stimulus

18
Q

Anterior spinothalamic tract

A

Light touch and pressure

19
Q

Lateral spinothalamic tract

A

Pain and temp sensation

NPTE (9 decks)

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