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Flashcards in Spinal tracts Deck (17):
1

Fasciculus cuneatus

Ascending; Trunk, neck, and upper extremity proprioception, vibration, 2 point discrimination, graphesthesia

2

Fasciculus gracilis

Ascending; Trunk, lower extremity proprioception, 2 point discrimination, vibration, graphesthesia

3

Dorsal spinocerebellar

Ascending; Ipsilateral subconscious proprioception, tension in muscles, joint sense, posture of trunk and lower extremities

4

Ventral spinocerebellar

Ascending; Ipsilateral subconscious proprioception, tension in muscles, joint sense, posture of trunk, upper extremities, and lower extremities

5

Spino-olivary

Ascending; Relays information from cutaneous and proprioceptive organs

6

Spinoreticular

Ascending; Influences level of consciousness

7

Spinotectal

Ascending; Spinovisual reflexes, assists with movement of eyes/head towards a stimulus

8

Anterior spinothalamic

Ascending; Light touch, pressure

9

Lateral spinothalamic

Ascending; Pain, temperature

10

Anterior corticospinal

Descending; Pyramidal motor tract - ipsilateral voluntary, discrete, skilled movement

11

Lateral corticospinal

Descending; Pyramidal motor tract - contralateral fine movement

12

Reticulospinal

Descending; Extrapyramidal motor tract - facilitation or inhibition of voluntary and reflex activity (influences alpha/gamma motor neurons)

13

Rubrospinal

Descending; Extrapyramidal motor tract - gross postural tone, facilitates activity of flexors, inhibits extensors

14

Tectospinal

Descending; Extrapyramidal motor tract - contralateral postural muscle tone, associated with auditory/visual stimuli

15

Vestibulospinal

Descending; Extrapyramidal motor tract - ipsilateral gross postural adjustments (subsequent to head movements), faciliate extensors, inhibit flexors

16

Damage to pyramidal motor tracts

Damage to corticospinal tracts results in +Babinski sign, absent superficial abdominal reflexes, and cremasteric reflex, loss of fine motor or skilled voluntary movement

17

Damage to extrapyramidal motor tracts

Damage to extrapyramidal tracts results in significant paralysis, hypertonicity, exaggerated DTRs, and clasp-knife reaction