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Flashcards in 119-121 Deck (15)
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1

What is an upper motor neuron lesion?

condition caused by vasc problems/stroke, trauma or tumors in the cns interrupting the descencing lower motor pathways exerting control on lmn's.

2

Where can lesions occur?

above level of the pyramids (as in the cerebrum as a result of stroke in the motor cortex or the posterior limb of the internal capsule) or in the SC

3

What would a unilateral lesion above the pyramids result in?

typical signs contralateral to the lesions

4

What would a unilateral lesion in the spinal cord result in?

disruption of motor control ipisilateral to the lesion

5

What happens during intial spinal shock

flaccid paralysis, hypotonia, hypoflexia

6

What happens after several weeks of spinal shock

weak voluntary movements. tone of muscle is increased beyond normal. and this results in the spasticity of the muslces (increased activity of gamma motor nuerons)

7

What is hyperflexia

deep tendon reflex is exaggarated

8

What are limb positions in cerebral lesions in the cerebral cortex, lateral capsule and thalamus

upper extremity: flexed
lower """" extended
some mscle paralysis in the contralateral head, and contralateral tonuge.

9

What are the limb positions in spinal cord lesions

upper: flexed
lower: extended

10

What is the babinski sign

normal response in plantera flexion of digsit, abnormal: dorsiflexion

11

What is quadra/tetraplegia ___
hemiplegia____
paraplegia____
monoplegia________

paralysis of all four extremities.
" " of half the body
lower half of body paralysed
loss of function in on extemity.

12

Unilateral lesions above the pyramids result in

contralateral spastic paralysis

13

What happens when upper cerivals are completely transection

spastic paralysis (quadreplegia), loss of all ss below lesion

14

Whant happens when you transect thoracic duct

spastic paralysis, loss of SS below legion

15

What is brown sequard syndrome

sensory impaired: loss of pain, temp from contralateral body. loss of fine touch, proprioception and vibratation from same side of body
motor impariment: spastic paralysis ipsilateral side. can be midcervica/thoracic duct like.