Neuro #29 Spinal Systems.txt
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Which of the following provide Flexor movement?: MLF, Vestibulospinal, Medial/Lateral reticulospinal, Rubrospinal tracts
Rubrospinal: the rest affect extensors
What, specifically, does the Vestibulospinal Tract act on?
Is the vestibulospinal tract ispi/contralatera?
Does the vestibulospinal tract receive cortical input?
What activates the vestibulospinal tract?
- Fastigial nuclei
- Vestibular input
What are other names for medial/lateral reticulospinal tracts? functions?
- Medial: Pontine, excite
- Lateral: Medullary, inhibit
- **Named for origin
Along with extensor information, what other info is carried through the medial reticulospinal system?
Does the Reticulospinal system receive cortical input?
What is the function of the Rubrospinal tract?
Excite flexors of upper limb
Does the rubrospinal system receive cerebral cortical or nuclear input?
What is decorticate posture?
Arms flexed, legs extended
What is decerebrate posture?
All limbs extended
What is the main tract driving decerebrate deficits? Why?
Medial Reticulospinal Tract (Pontine) b/c of ALS pain fibers
What neuron is activated by the Medial reticulospinal tract (Pontine)?
What neuron is activated by the Rubrospinal tract?
What occurs clinically if there is a hemorrhage from the cortex that enters that brainstem?
Movement from decorticate to decerebrate posture
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