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Neuro 1 Norm Fn
Cerebral Vasc, Neuro Org
| Question | Answer |
|---|---|
| Which spinal tract conveys the following info?: touch, vibration, pressure | Dorsal column (fascic gracilis and cuneatus) |
| Which spinal tract conveys the following info?: voluntary motor command from motor cortex to body | Corticospinal tract (lateral and ventral) |
| Which spinal tract conveys the following info?: voluntary motor command from motor cortex to head and neck (H&N) | Corticobulbar tract (think cortico for cortex and your head as a bulb) |
| Which spinal tract conveys the following info?: pain and temp | Lateral spinothalamic tract |
| Which spinal tract conveys the following info?: importatnt for postural adjustments and head movements | Vestibulospinal tract |
| What are the two most common (MC) locations of aneurysms in the Circle of Willis? | Anterior communicating a and posterior communicating a |
| An aneurysm in which part of the Circle of Willis can cause bitemporal lower quadrant anopsis? What is the mechanism? | Anterior communicating artery via compression of optic chiasm |
| What type of nerve palsy might you see with an aneurysm in the posterior communicating artery? How would it present? | 3rd n palsy (eye looks down and out) |
| A lesion to which area of the brain is responsible for the following clinical scenarios?: contralateral hemibalismus | Subthalamic nucleus |
| A lesion to which area of the brain is responsible for the following clinical scenarios?: eyes look toward side of lesion | Frontal eye fields |
| A lesion to which area of the brain is responsible for the following clinical scenarios?: eyes look away from side of lesion | PPRF |
| A lesion to which area of the brain is responsible for the following clinical scenarios?: paralysis of upward gaze | Superior colliculi (Parinaud syndrome) |
| A lesion to which area of the brain is responsible for the following clinical scenarios?: hemispatial neglect syndrome | Non-dominant parietal lobe (usually R lobe in most people). High yield (HY)! |
| A lesion to which area of the brain is responsible for the following clinical scenarios?: coma | Reticular activating system |
| A lesion to which area of the brain is responsible for the following clinical scenarios?: poor repetition | Arcuate fasciculous |
| A lesion to which area of the brain is responsible for the following clinical scenarios?: poor comprehension | Wernicke's (W is for Word salad) |
| A lesion to which area of the brain is responsible for the following clinical scenarios?: poor vocal expression | Broca's (mouth is Broc-ken) |
| A lesion to which area of the brain is responsible for the following clinical scenarios?: resting tremor | Basal ganglia |
| A lesion to which area of the brain is responsible for the following clinical scenarios?: intention tremor | Cerebellar hemisphere |
| A lesion to which area of the brain is responsible for the following clinical scenarios?: Hyperorality, hypersexuality, disinhibited behavior | B/L amygdala (remember amygdala is fear center; if you lose that, you will not be worried too about consequences); Kluver-Bucy syndrome |
| A lesion to which area of the brain is responsible for the following clinical scenarios?: personality changes | Frontal lobe |
| A lesion to which area of the brain is responsible for the following clinical scenarios?: dysarthria (tongue, lips don't work) | Cerebellar vermis |
| A lesion to which area of the brain is responsible for the following clinical scenarios?: agraphia and acalculia (inability to write or do math calculations) | Dominal parietal lobe (usually L lobe in most people) |
| If a patient has poor comprehension or poor vocal expression, which artery was likely disrupted? | MCA (supplies Wernicke's and Broca's) |
| Which area of the brain is intentionally lesioned in Parkinson's disease? | Subthalamic nucleus; helps by increasing movement |
| Which spinal cord lesion matches the following description?: fasciculations but also spastic paralysis. What disease does this cause? | Corticospinal tract and ventral horn. Causes ALS. |
| Which spinal cord lesion matches the following description?: impaired proprioception and non-reactive pupils. What disease is this assoc'd with (a/w)? | Dorsal columns. Syphilis (Argyll-Robertson pupils accomodate but don't react) |
| Which spinal cord lesion matches the following description?: B/L loss of pain and temp below the lesion and hand weakness. What disease process is this a/w? | Central column. Syringomyelia |
| B/L loss of vibration sense and spastic paralysis of legs then arms is a/w which disease? | Vit B12 deficiency |
| Which spinal cord lesion matches the following description?: B/L loss of pain/temp below lesion, B/L spastic paralysis below lesion and B/L flaccid paralysis at level of lesion | Anterior spinal a |
| What part of the spinal cord is spared in spinal a syndrome? | Dorsal columns |
| Which cranial n is responsible for the following?: eyelid opening | Occulomotor (CN3) |
| Which cranial n is responsible for the following?: taste from anterior 2/3 of tongue | Facial (CN7) |
| Which cranial n is responsible for the following?: head turning | Accessory (CN11) |
| Which cranial n is responsible for the following?: tongue movement | Hypoglossal (CN12) |
| Which cranial n is responsible for the following?: mm of mastication | Trigeminal (CN5) |
| Which cranial n is responsible for the following?: balance | Vestibulocochlear (CN8) |
| Which cranial n is responsible for the following?: monitoring carotid body and carotid sinus chemoreceptors and baroreceptors | Glossopharyngeal (CN9); think pharyngeus in neck |
| Where does each of the following spinal tracts decussate/cross over?: dorsal columns | Medulla |
| Where does each of the following spinal tracts decussate/cross over?: lateral corticospinal tract | Medullary pyramids |
| Where does each of the following spinal tracts decussate/cross over?: spinothalamic tract | Anterior white commissure |
| Name the 4 characteristic features of Brown-Sequard syndrome. | 1. Ipsi loss of vibration and discrimination below lesion (dorsal column) 2. Ipsi spastic paralysis below lesion (corticospinal) 3. Ipsi flaccid paralysis at lesion (anterior horn) 4. Contra loss of pain and temp below lesion (spinothalamic tract) |
| Polio and West Nile Virus affect which part of the spinal cord? | Anterior horn neurons (flaccid paralysis) |
| Pronator drift test assesses which part of spinal cord? | UMN |
| A young pt comes in with progressive ascending paralysis over the past few hours. He denies any fever or prodromal illness. What is the likely cause? | Tick. Removal of tick relieves sx. |
| 30yo female presents complaining of ascending paralysis over past week. CSF has high protein with few cells. What is the likely dx and tx? | Dx: Guillan-Barre Tx: IVIG or plasmapharesis |
| How can you differentiate botulism from Guillan Barre or tick-borne paralysis? | Botulism has desceding paralysis pattern whereas the other two are ascending (tick and Guillan-Barre) |
Created by:
sarah3148
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