Flashcards in Neurology p. 470-474 Deck (59)
What 2 Spinal tracts are ascending and sense pressure?
which track has a 2nd synapse on NMJ?
Lateral corticospinal tract
Which 2 tracts decussate at the 2ND-ORDER NEURON?
Spinothalamic tract (Anterolater)
Which 2 tracts decussate in medulla?
Lateral corticospinal tract (pyramidal decussation)
Which 2 tracts sense pressure?
Which 2 tracts cell body in dorsal root ganglion?
Which tract decussates at anterior white commissure?
Where is the cell body of Lateral corticospinal tract?
cell body in 1° motor cortex
Which 2 tracts have a 3RD-ORDER NEURON end in Sensory cortex?
Which tract sends vibration, fine touch, and proprioception to the cortex?
Atrophy UMN or LMN?
Where does the Lateral corticospinal tract become LMN?
at spinal cord as 2ND-ORDER NEURON
Which tract sends
Lateral: pain, temperature
Anterior: crude touch,
Spastic paralysis UMN or LMN?
Which motor neuron sign is seen in both UMN and LMN?
UMN or LMN in Werdnig-Hoffmann disease? Where is the distruction? And mode of inheritance?
LMN lesions only
destruction of anterior horns; flaccid paralysis.
Fasciculations UMN or LMN?
A pt with weakness and fasciculations and spastic paralysis but has no sensory or oculomotor deficits suffers from what spinal coed dz?
Scanning speech, intention tremor, nystagmus are sx of what spinal cord dz?
Clasp knife spasticity UMN or LMN?
Reflexes and Tone incr with UMN or LMN?
pt has impaired sensation and proprioception,
progressive sensory ataxia (inability to sense or feel
the legs causing poor coordination). What is the path?
Amyotrophic lateral sclerosis involves UMN or LMN? Name the cause?
defect in superoxide dismutase 1.
Lesion to what spinal artery destroys all but spares dorsal columns and Lissauer tract? and why is that part spared?
Complete occlusion of anterior spinal artery
because gracilis and cuneatus are supplied by Posterior spinal arteries.
⊕ Romberg sign is seen in which 2 spinal cord lesions?
Vit B12 def.
Which artery supplies ASA below ∼ T8?
MOA of Riluzole and what is treats?
incr modestly survival of ALS
decr presynaptic glutamate release
demyelination of dorsal columns, lateral corticospinal tracts, and spinocerebellar tracts i seen in which path?
Vit B12 def
Name 3 demyelination paths of the spinal cord?
vit B12 def