mod 7: spinal cord Flashcards
Posterior dorsal horns
sensory, fine touch, vibration, proprioception
Anterior ventral horns
motor
spinothalamic tract
carries 3 to ____
crossover is ____, deficit is ___ to lesion
sensory, anterior and lateral spinal thalamic tract
carries pain, temp, touch to thalamus
crossover is immediate (deficit is contralateral to lesion)
posterior column
sensory, fasiculous gracilis +cuneatus tracts
carries proprioception, vibration, sterognosis and fine touch
crosses at brainstem junction, deficits are ipsilateral
all ascending tracts->___-> cerebral cortex
deficits in cerebral cortex are
if cant feel L vibration , issue is same side spinal cord OR contralateral in cerebral cortex
thalamus
contralateral
pyramidal tract
corticospinal and bulbar tracts, motor
voluntary movement/skill
crossover is at brainstem junction, deficits=contralateral
upper motor neuron deficits
spastic paralysis, hyperreflexia, babinski
ALS/lou gherigs
lower motor deficits
flaccid paralysis, atrophy, fasciculations, fibrilations, hyporeflexia (poliomyelitis)
extrapyramidal tract
motor, rubro/tecto/vestibulospinal tract
crossover high, contralateral deficits from brain
gross/automatic movments, face, posture, speech, swallow
extrapyramidal tract deficits
spastic muscle tone, abnormal posture, involuntary movements, tremors, ^DTR, strength not affected
ex:parkinsons
CN1
olfactory- smell
CN2
optic
CN 3
CN6
(extra)occulomotor- eye movements
abducens- moving eye laterally (tested
CN4
trochlear- following an object w eyes
CN5
Trigeminal- motor/sensory face, corneal reflex/chewing muscles
