lesion stuff Flashcards
parasympathetic functions for GI tract, lungs, thoracic innervations
dorsal motor nuc of vagus
vertigo, imbalance, nystagmus
lesion to vestibular nuclei
impairments in taste, visceral sense from stretch and chemoreceptors in cardiovascular/respiratory/intestinal systems
lesion to solitary tract and nucleus
pain and temperature from ipsilateral face and head
spinal trigeminal nucleus/tract
ataxia definition
uncoordinated muscle movements
ataxia, dysmetria, and dysdiadokokinesia
lesion to inferior cerebellar peduncle
define dysmetria and dysdiadokokinesia
under/overshoot, and impaired ability to perform rapid, alternating movements
pain and temperature from contralateral side of body
ALS
unconscious proprioception from ipsilateral side of body
spinocerebellar tract
tongue deviation to ipsilateral side
lesion to hypoglossal nucleus/nerve
weak adduction (nasal movement) and abduction nystagmus of contralateral eye
lesion to medial longitudinal fasciculus at open medulla
fine touch, position, movement, from contralateral side of body
medial lemniscus
damage to CONTRALATERAL corticospinal tract upper motor neurons for contralateral side of body could be caused by lesions where? (3)
lesions to pyramid, cerebral peduncle, pyramidal tracts through pons
medial medullary syndrome, describe kind of paralysis
damage to medial open medulla. “crossed paralysis” because cranial nerve (above-neck) effects are ipsilateral to lesion, and spinal nerve (below-neck) effects are contralateral to lesion
impaired eye movement, strabismus, diplopia, ptosis (drooping eyelid), dilated pupil
lesion to ipsilateral oculomotor nerve
motor problems with contralateral limbs
lesion to red nucleus
parkinsons: muscular rigidity, resting tremor, akinesia, slowness of movement, postural instability
lesion to substantia nigra
where do descending motor tracts cross?
pyramidal decussation
what do the crossing fibers in lower pons form?
cerebellar peduncles
diplopia due to ipsilateral eye being unable to abducate, and contralateral eye being unable to adducate (conjugate gaze paralysis)
lesion to abducens nucleus/nerve
weakness of superior and inferior facial muscles
lesion to ipsilateral facial nucleus/nerve
where do dorsal columns cross?
in medial lemniscus after closed medulla
[reverse card]
dorsal motor nuc of vagus
parasympathetic functions for GI tract, lungs, thoracic innervations
[reverse card]
lesion to vestibular nuclei
vertigo, imbalance, nystagmus
[reverse card]
lesion to solitary tract and nucleus
impairments in taste, visceral sense from stretch and chemoreceptors in cardiovascular/respiratory/intestinal systems
[reverse card]
spinal trigeminal nucleus/tract
pain and temperature from ipsilateral face and head
[reverse card]
uncoordinated muscle movements
ataxia definition
[reverse card]
lesion to inferior cerebellar peduncle
ataxia, dysmetria, and dysdiadokokinesia
[reverse card]
under/overshoot, and impaired ability to perform rapid, alternating movements
define dysmetria and dysdiadokokinesia
[reverse card]
ALS
pain and temperature from contralateral side of body
[reverse card]
spinocerebellar tract
unconscious proprioception from ipsilateral side of body
[reverse card]
lesion to hypoglossal nucleus/nerve
tongue deviation to ipsilateral side
[reverse card]
lesion to medial longitudinal fasciculus at open medulla
weak adduction (nasal movement) and abduction nystagmus of contralateral eye
[reverse card]
medial lemniscus
fine touch, position, movement, from contralateral side of body
[reverse card]
lesions to pyramid, cerebral peduncle, pyramidal tracts through pons
damage to CONTRALATERAL corticospinal tract upper motor neurons for contralateral side of body could be caused by lesions where? (3)
[reverse card]
damage to medial open medulla. “crossed paralysis” because cranial nerve (above-neck) effects are ipsilateral to lesion, and spinal nerve (below-neck) effects are contralateral to lesion
medial medullary syndrome, describe kind of paralysis
[reverse card]
lesion to ipsilateral oculomotor nerve
impaired eye movement, strabismus, diplopia, ptosis (drooping eyelid), dilated pupil
[reverse card]
lesion to red nucleus
motor problems with contralateral limbs
[reverse card]
lesion to substantia nigra
parkinsons: muscular rigidity, resting tremor, akinesia, slowness of movement, postural instability
[reverse card]
pyramidal decussation
where do descending motor tracts cross?
[reverse card]
cerebellar peduncles
what do the crossing fibers in lower pons form?
[reverse card]
lesion to abducens nucleus/nerve
diplopia due to ipsilateral eye being unable to abducate, and contralateral eye being unable to adducate (conjugate gaze paralysis)
[reverse card]
lesion to ipsilateral facial nucleus/nerve
weakness of superior and inferior facial muscles
[reverse card]
in medial lemniscus after closed medulla
where do dorsal columns cross?
parasympathetic issues
vertigo
taste and visceral sense issues
loss of contralateral fine touch
loss of ipsilateral pain and temp from face and head
ataxia, dysmetria
loss of ipsilateral unconscious proprioception
loss of contralateral pain/temp
open medulla
dorsal motor nuc of vagus
vestibular nuclei
solitary tract/nucleus
cuneate nucleus
spinal trigeminal
inferior cerebellar peduncle
ALS

paralysis on contralateral side
loss of fine touch, position, etc on contralateral side
tongue deviation to ipsilateral side
loss of taste on ipsilateral side
weak adduction of the ipsilateral eye
open medulla
pyramidal tract (LCST)
hypoglossal nucleus
MLF

contralateral motor coordination issues
contralateral hemiparesis
parkinson’s
impaired ipsilateral eye movement
midbrain
red nucleus
cerebral peduncle
substantia nigra
oculomotor nerve

motor coordination problems
hemiparesis on contralateral side
possible weakness in abducating ipsilateral eye
lower pons
pyramidal tract
pontine fibers
possible abducens nerve

diplopia
weakness of ipsilateral superior/inferior facial muscles
vertigo
loss of ipsilateral pain/temp from face
loss of fine touch from contralateral side
loss of contralateral pain/temp from body
contralateral hemiparesis
abducens nucleus
facial motor nucleus/nerve
vestibular nuclei
spinal trigem nucleus and tract
medial lemniscus
ALS
LCST
