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How many nerves are in PNS
31 pair of spinal and 12 cranial
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Brown Sequard
loss of pain, temp and light touch on opposite side, loss of motor function and vibration, position and deep touch sensation on same side as cord damage
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Paraplegia
injuries at or below T2 may cause paralysis of the lower part of the body
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Spinal shock
immediate, transient response to an injury in which reflex activity below the level of the injury temporarily ceases; paralysis is flaccid-as neurons regain, muscles become spastic
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Auto Dys only occurs
after spinal shock is resolved and with injury at or above T6
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Why does pt receive methylprednisolone
reduces the damage to the cellular membrane
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What is performed before crainiotomy
cerebral angiography
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Area of skin supplied by sensory nerve fibers from a single posterior spinal root
dermatome
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Surgical procedure done to alleviate compression of the spinal cord or nerves
laminectomy
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Visualization of the spinal cord and vertabra through the injection of a radiopaque dye directly into the subarachnoid space of the spinal cord
myelography (l3 and l4)
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Spinal cord extends from
brainstem to L2
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Spinothalamic
carries pain and temperature lateral sensation from opposite side
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Corticospinal
controls voluntary motor action
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Spinocerebellar
Assists in coordination of muscle contraction
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Posterior columns
carries touch, deep pressure, vibration and position sense
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Loss in all four extremities
quad/tetraplegic
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Injuries at or below what cause paraplegia
T2
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