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Neurology
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Neurology
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What condition described as the sensation of spinning while
actually stationary?
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VertigoAnswer:
It's the sensation that you, or theenvironment around you,
ismoving or spinning. This feelingmay be barely noticeable, or
itmay be so severe that you find itdifficult to keep your balance
anddo everyday tasks.
The most common causes ofvertigo are inner ear infections
ordiseases of the ear such as benignparoxysmal positional
vertigo(BPPV), vestibular neuritis, andMeniere's disease.
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Neurology
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Status epilepticus is a life-threatening medical emergency that
can be treated with:
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BenzodiazepinesAnswer:
Status epilepticus is a neurologicalemergency requiring
immediateevaluation and management toprevent significant morbidity
ormortality.
Benzodiazepines act as a sedative– slowing down the
body'sfunctions – and are used for bothsleeping problems and
anxiety.They work by increasing the effectof a brain chemical
called GABA(gamma amino butyric acid).
GABA reduces brain activity in theareas of the brain responsible
for:rational thought.
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Neurology
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Which of the following cells provide vision in dim light?
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Rod cellsAnswer:
Rod cells are able to function indim light but do not
perceivecolour. Rod cells are able to workin low light intensity
because thecell can respond to a singlephoton of light (more
sensitive).
The brain requires fewer than 10such responses to perceive
thesensation of a flash of light.
Rod cells are highly sensitive tolight and function in
nightvision,whereas cone cells are capable ofdetecting a wide
spectrum of lightphotons and are responsible forcolour vision.
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MultipleChoiceQuestionsSection
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Neurology
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The back of the nose isconnected by whichpart of the middle
ear?
Round window
Eustachian tube
Stapes
Stapes
Neurology
Multiple Choice
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Eustachian tubeAnswer:Answer:
The eustachian tube is acanal that connects themiddle ear to
thenasopharynx, which consistsof the upper throat and theback of
the nasal cavity.
It controls the pressurewithin the middle ear,making it equal
with the airpressure outside the body.
The eustachian tube opensupon swallowing or yawningby
contraction of the tensorveli palatini muscle.
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Neurology
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_____ is differentiatedfrom reflex syncope bythe presence of
normalblood pressure onstanding in reflexsyncope.
Neurology
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Orthostatichypotension
Answer:
Orthostatic hypotension — alsocalled postural hypotension — is
aform of low blood pressure thathappens when you stand up
fromsitting or lying down.
Orthostatic hypotension can makeyou feel dizzy or lightheaded,
andmaybe even cause you to faint.
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True orFalseSection
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Neurology
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Posterior uveitis mostcommonly presents asdecreased visualacuity
with pain.
Neurology
True or False
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FALSEAnswer:
There are three types of uveitis,classified according to the
part ofthe uvea that is affected.
Anterior uveitis, which affects thefront part of the eye, is
alsosometimes called iritis since theiris is part of the front of
the eye.Intermediate uveitis, also knownas pars planitis or
cyclitis, refersto inflammation of tissues in thearea just behind
the iris and lensof the eye.Posterior uveitis, also known
aschoroiditis, refers toinflammation of the choroid, theback part
of the uvea.
The normal PR interval onelectrocardiogram is within 0.12-0.2
seconds.
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