Neuro Flashcards
Cranial nerve pathways
CNI → cribiform plate CNII → optic canal CNIII → superior orbital fissure CNIV → superior orbital fissure CNV1 → superior orbital fissure CNV2 → foramen rotundum CNV3 → foramen ovale CNVI → superior orbital fissure CNVII → internal auditory meatus CNVIII → internal auditory meatus CNIX → jugular foramen CNX → jugular foramen CNXI → jugular foramen CNXII → hypoglossal canal
Cranial nerves
CNI → olfactory CNII → optic CNIII → oculomtor CNIV → trochlear CNV1 → trigeminal (ophthalmic) CNV2 → trigeminal (maxillary) CNV3 → trigeminal (mandibular) CNVI → abducens CNVII → facial CNVIII → vestibulocochlear CNIX → glossopharyngeal CNX → vagus CNXI → spinal accessory CNXII → hypoglossal
Oh oh oh to touch and feel virgin girls vagina and hymen
Eye muscle innervations
III oculomotor → medial, sup, inf rectus, inf oblique
IV trochlear → superior oblique
VI abducens → lateral rectus
Epidural hematoma
Middle meningeal artery
biconvex
Subdural hematoma
Crescent shaped
Subarachnoid hemorrhage
worst headache of my life
Middle cerebral artery stroke
contralateral paralysis and sensory loss
face and upper limb
Anterior cerebral artery stroke
contralateral paralysis and sensory loss
lower limb and urinary incontinence
Lenticulostriate artery stroke
contralateral paralysis
pure motor stroke
Posterior Inferior Cerebellar Artery (PICA) stroke
dysphagia, hoarseness, ↓ gag,
↓ pain and temp contralateral body, ipsilateral face
don’t PICA horse that can’t eat
Anterior Inferior Cerebellar Artery (AICA) stroke
paralysis of face
↓ pain and temp contralateral body, ipsilateral face
basilar artery stroke
Locked in syndrome (can only move eyes)
Broca’s aphasia
Comprehensive
nonfluent, repetitive
broken speech = broca’s
Wernicke apahasia
Fluent
Poor comprehension, repetitive
Word salad = wernicke
Transcortical sensory aphasia
Fluent, not repetitive
Poor comprehension
Transcortical motor aphasia
Comprehensive
nonfluent, but not repetitive
Conduction aphasia
Comprehensive and fluent
repetitive
Parkinson disease
Tremor (pill rolling)
Cog wheel rigidity
bradykinesia
Shuffling gait
↓ dopaminergic neurons in substantia nigra
Lewy bodies made of α-synuclein
Huntington disease
Trinucleotide repeat of CAG Aggression, depression, dementia athetosis, chorea ↑ dopamine ↓ ACh and GABA atrophy of caudate and putamen
Alzheimer disease
Widespread cortical atrophy, particularly in the hippocampus
ß-amyloid plaques from amyloid precursor protein (APP)
Normal pressure hydrocephalus
elderly patients
expansion of ventricles with normal pressure CSF
MS
autoimmune inflammation and demyelination of CNS
↑IgG in CSF
paraventricular plaques
Charcot-Marie-Tooth disease
pes cavus, hammer toe, foot drop
hereditary motor and sensory neuropathy
Tuberous sclerosis
TSC1 (chromosome 9) or TSC2 (chromosome 16) Harmartomas Angiofibromas Mitral regurg Ash leaf spots Rhabdomyoma Mental retardation Angiomyolipomas Seiuzures Shagreen patches
Neurofibromatosis type I
NF1 (chromosome 17) cafe-au-lait spots mental retardation cutanous neurofibromas Lisch nodules (on iris) optic gliomas pheochromocytoma siezures bone lesions
Neurofibromatosis type II
NF2 (chromosome 22) all 2's bilateral vestibular schwannomas juvenile cataracts meningiomas ependymoma
2 eyes, 2 eyes, 2 parts of brain
vin Hippel-Lindau disease
VHL (chromosome 3) Hemangioblastoma (brain, retina, spine) Angiomatosis Renal Cell carcinoma Pheochromocytoma HARP
Friedreich ataxia
trinucleotide repeat of GAA staggering gait, frequent falling DM hypertrophic cardiopmyopathy scoliosis
CN V lesion
jaw deviates toward
CN XII
tongue deviates toward (lick your wounds)