A
Why do some people have foot fetish?
The feet are adjacent to the genitals in the somatosensory homunculus map.
These cells produces CSF in the ventricles
Ependymal cells
What is the primary inhibitory NT?
Gabapentin
Immediate precursor of dopamine , can cross BBB and is given with Carbidopa to treat Parkinson's Disease
Levidopa
This is a supporting cell from the CNS that forms the myelin sheath.
Oligodenrocytes
This subtype of Multiple Sclerosis occurs in 85-90% of MS cases initially. There are clearly defined relapses.
Relapsing-Remitting
This drug can cause PML (progressive multifocal leukoencephalopathy)
Natalizumab (Tysabri)
In this autosomal inherited disease, relative excess of dopamine exists because neurons in basal ganglia, frontal cortex and cerebellum are destroyed.
Huntington's disease
A type of concussion that lasts less than 6 hours and is acccompanied by anterograde and retrograde amnesia
Classic Cerebral Concussion
This type of brain injury occurs with sudden deceleration where widespread neuronal damage occurs.
Diffuse Axonal Injury DAI
This TBI consists of tears in veins causing a collection of blood b/w dura & arachnoid. Most common in elderly pt and alcoholics.
Subdural Hematoma
This drug is an MAOB inhibitor that can cause hypertensive crisis if pt isnt educated about eating Tyramine containing foods.
Selegiline (Eldepryl)
What kind of stroke needs to be ruled out in CT before we treat patient with tPA?
Hemorrhagic stroke
___ prevent seizures from happening; only ____ stops it while it is happening.
AEDs ; Valium
These are the only striated muscles that are not affected by this non-inflammatory degenerative disease.
heart and extraocular muscles; disease is called ALS or Lou Gehrig's disease
Can you get a definitive diagnosis for Alzheimer's disease? Why?
No, it is difficult to diagnose neurofibrillary tangles and amyloid deposits until autopsy.
This is the zone of reversible ischemia around a core of irreversible infaction.
Penumbra
What artery is the most common site for CVA? and why is a blockage in this artery very devastating compared to other arteries?
Middle cerebral artery
True
Name the three cardinal manifestations of Parkinsons Disease
resting tremor, cog wheel rigidity, bradykinesia
In skull fractures, how do we determine if a leak from ears and nose is CSF?
If the leak is CSF, it would be positive for glucose.
Differentiate ischemic stroke vs hemorrhagic stroke.
Basically ischemic stroke is due to plaque and clot blockage reducing brain perfusion while hemorrhagic stroke is damaged brain perfusion due to bleeding.
Why do we often see CSF leakage from nose and ear in a _______ type of skull fracture?
Basilar; base of skull, cribriform plate and ears are close to each other.
Why is this abnormal posturing relatively worse than the other abnormal posturing?
Decerebrate posture is worse than decorticate because pressure is within/lower than brainstem which is responsible for autonomic body functions like breathing and etc. Basically decerebrate means there is serious damage to the brain itself.
What is autoregulation?
Ability of brain to maintain constant cerebral blood flow (steady perfusion) despite changes in systemic arterial pressure (MABP b/w 60-140 mmHg). Ability to adjust flow to meet localized metabolic needs.