Spinal Cord Tracts Flashcards Preview

NPTE -- Neuro > Spinal Cord Tracts > Flashcards

Flashcards in Spinal Cord Tracts Deck (17)
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1

Ascending Tracts (2)

1. Sensory

2. White Matter

2

Fasciculus Cuneatus (3)

1. Posterior/Dorsal Column

2. Ascending/Sensory

3. Trunk/Neck/UE proprioception, vibration, 2 point discrimination, graphesthesia

3

Fasciculus Gracilis

1. Posterior Gracilis 

2. Ascending/Sensory

3. Trunk/LE proprioception, 2 point discrimination, vibration, graphesthesia

4

Spinocerebellar Tract (Dorsal)

1. Ascending/Sensory

2. Ipsilateral subconscious proprioception, muscle tension, joint sense, trunk/LE posture

5

Spinocerebellar Tract Ventral

1. Ascending/Sensory

2. Ipsilateral subconscious proprioception, muscle tension, joint sense, Trunk/UE/LE posture

6

Spino-olivary Tract

1. Ascending/Sensory

2. Cutaneous/Proprioceptive organ information

7

Spinoreticular Tract

1. Ascending/Sensory

2. Level of consciousness

8

Spinotectal Tract

1. Ascending/Sensory

2. Spinovisual reflexes, Movement of eyes toward stimulus

9

Spinothalamic Tract Anterior

1. Ascending/Sensory

2. Light touch, pressure

10

Spinothalamic Tract Lateral

1. Ascending/Sensory

2. Pain, temperature

11

Descending Tracts (3)

1. Voluntary motor function, muscle tone, reflexes

2. Visceral innervation

3. Modulation of ascending sensory signals

12

Corticospinal Tract Anterior

1.  Descending/Motor

2. Ipsilateral voluntary, discrete, skilled movement

13

Corticopsinal Tract Lateral

1. Descending/Motor

2. Contralateral voluntary fine movement

 

*Damage = + babinksi, loss of fine motor/skilled voluntary movement.

14

Reticulospinal Tract

1. Descending/Motor

2. Facilitate/Inhibit voluntary/reflex activity via alpha/gamma motor neurons

15

Rubrospinal Tract

1. Descending/Motor 

2. Gross posture, facilitate flexor mm activity, inhibit extensor mm activity

16

Tectospinal Tract

1. Descending/Motor

2. Contralateral postural tone associated with auditory/visual stimuli

17

Vestibulospinal Tract

1. Descending/Motor

2. Ipsilateral gross postural adjustment based on head movement, facilitates extensor mm activity, inhibit flexor mm activity

 

*Damage = paralysis, hypertonicity, hyperreflexive, clasp-knife reaction