CNS 2017 F Flashcards
(36 cards)
- During otoscopic examination, the bright cone is normally seen in which quadrant of the tympanic membrane ?
A. anteroinferior
B. anterosuperior
C. posterosuperior
D. posteroinferior
A
What happens in a lesion to both posterolateral parietal lobe?
We don’t know
A 75yr old man had a large ischemic stroke in the frontal lobe 15 years ago
What will you find when you see the brain grossly now? (Not the exact wording but same idea)
A. Cystic cavities
B. Edema
C. Petechial hemorrhage
D. Rupture of aneurysm of circle of willis
A
A vaccine against which microorganism is required as prophylaxis to those in close contacts with infected patients?
A. Haemophilus influenzae B. Strept pneumo
C. Listeria
A
Which drug increases prolactin and lowers testosterone?
Rametleon
Lesion in the temporal lobe causes what visual defect?
A. homonymous hemianopia B. pie in the sky
B
A man was stabbed on the left side of his face & the parotid gland along with hypoglossal nerve were damaged, what will we see in this patient?
A. loss of sensation on the left side
B. loss of temp on the left side
C. loss of proprioception on the left side
D. the tongue is directed to the left side when the patient protrudes it
D
Loss of sensation in the left upper limb & left jaw
Right middle cerebral artery damage
A repeated question about MS worsening with increased temp (Uthoff’s phenomenon – from PBL)
-
Which thalamus nuclei are responsible for emotional instability & spontaneous laughing or crying?
dorsomedial nuclei
(the other options were other thalamic nuclei)
What will happen when this area is damaged?
A. The patient can see but can’t reach an object
B. The patient can draw the object but can’t identify it
C. The patient can identify the object but can’t draw it
B
Imipramine MOA (mode of action)
Know that it is a tricyclic antidepressant and that it inhibits serotonin & NA uptake, and blocks potassium, histamine, and muscarinic receptors.
A question about a female patient who presented with a history of intermittent vision loss as well as muscle weakness and trouble in coordination (MS symptoms in general).
optic neuritis
Which drug is an inducer of an enzyme leading to many drug-drug interactions?
A. Phenytoin
B. ethosuximide
C. Vigabatrin
D. Cannabinoids
A (also carbamazepine is a correct answer if it was written instead of phenytoin)
There was a question about the definition of prodrugs.
the answer was along the lines of “a drug that gets into its active form after being metabolized”
What is the mechanism by which tramadol works?
A. M receptor agonist and serotonin norepinephrine reuptake inhibitor
B. GABA
C. Increase intracellular calcium
A
From which nucleus does the spinal tract of the trigeminal originate?
A. Ipsilateral spinal trigeminal nucleus
B. Contralateral spinal trigeminal nucleus
C. Sensory trigeminal nucleus
we are not sure tbh
What part of the auditory pathway is affected if there is an occlusion to the posterior cerebral artery?
we don’t know the answer
What structures form lentiform nucleus
A. Caudate nucleus and globus pallidus
B. Caudate nucleus and substantia nigra
C. Caudate nucleus and putamen
D. Putamen and globus pallidus
D
What cortex is the most affected with age?
A. Prefrontal cortex
B. Cerebellar cortex
A
What drug causes purple mottling of skin?
Amantadine
What drug causes insomnia if administered after mid afternoon?
Selegiline
What is the first enzyme that is responsible for the initiation of Alzheimer disease ?
A. Alpha secretase
B. Beta secretase
C. Gamma secretase
D. Delta secretase
B
Why is xanthine oxidase considered an insignificant source of superoxide anion in eschemia-reperfusion in the brain
A- low levels of ATP concentration
B- inhibition of xanthine oxidase
C- increased ATP concentration
D- increased NADPH concentration
A
