Nervous System Flashcards

1
Q

The most common kind of primary brain tumor in children is:

A

medulloblastoma

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2
Q

The largest cerebral artery, and the one most commonly affected by stroke is the

A

middle cerebral artery

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3
Q

Signs of MCA stroke are:

A
  • contraleral motor and sensory deficits, especially of the upper extremity
  • Contralateral homonymous hemianopia
  • language disturbances
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4
Q

Signs of ACA stroke are:

A
  • contralateral motor and sensory deficits, especially of the lower extremity
  • Loss of willpower/executive function
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5
Q

Projection of the optic nerve into the globe of the eye as a result of increased ICP is called:

A

papilledema

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6
Q

papilledema

A

Projection of the optic nerve into the globe of the eye as a result of increased ICP is called:

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7
Q

Increased ICP causes Ptosis (droopy eyelid) by:

A

compression of CNIII

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8
Q

congential causes of hydrocephalus include:

A

arnold-chiari malformation or myelomeningocele

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9
Q

Neonates tend not to show focal signs of hydrocephalus because:

A

the sutures have not yet clsoed so the monroe-kelly doctrine does not yet apply.

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10
Q

Meningococcus may enter an intact cranial vault through:

A

nasopharyngeal cells

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11
Q

The most common cause of meningitis in neonates is:

A

E Coli

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12
Q

The most common cause of meningitis in young chldren is

A

H Influenzae

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13
Q

The most common cause of meningitis in adults is

A

Meningococcus

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14
Q

Classic signs of meningites include:

A
  • head, back, and neck pain
  • nuchal rigidity
  • photophobia
  • Kernig’s sign (resistance to leg extension when lying with hip flexed)
  • petechial rash
  • irritability
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15
Q

Guillain Barre syndrome is caused by

A

autoimmune attack of the PNS (esp. Schwann cells)

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16
Q

signs of Guillain Barre syndrome:

A
  • ascending flaccid paralysis
  • parasthesia, pain accompanying weakness
  • vision, speach, and breathing disturbances
  • autonomic dysreflexia
  • RAPID onset
17
Q
  • ascending flaccid paralysis
  • parasthesia, pain accompanying weakness
  • vision, speach, and breathing disturbances
  • autonomic dysreflexia
  • RAPID onset
A

signs of Guillain Barre syndrome:

18
Q

Treatment for Guillain Barre syndrome in which IGG antibodies are removed from blood

A

plasmapheresis

19
Q

Epidural hematoma is usually from a ________ and progresses _______ (gradually / rapidly)

A

artery, rapidly.

usually the middle meningeal artery

20
Q

subdural hematoma is usually from a ________ and progresses __________

A

vein, slowly

21
Q

List 4 reasons bleeding within the brain is dangerous

A
  • Increased ICP
  • Ischemia downstream from bleeding
  • Blood is irritating to nervous tissue
  • Blood causes local vasoconstriction
22
Q

Describe problems of autonomic dysreflexia

A
  • ascending sympathetic signals are blocked
  • a painful stimulus (bladder distension, etc.) causes sympathetic outflow as a reflex.
  • This leads to hypertension
  • parasympathetic system can not downregulate sympathetic response
  • extreme hypertension may result.
23
Q

MS is caused by

A

autoimmune demyelination within the CNS

24
Q

signs of MS are:

A
  • blurred vision
  • leg weakness
  • difficulty speaking (scanning speach)
  • scotoma (blind spot)
25
Q

PAthophysiology of alzheimer’s

A
  • degenerative changes to substantia nigra of the basal nuclei
  • impairment of dopamine production
26
Q

signs of parkinsons

A
  • mask fascies
  • resting/pill-rolling tremor
  • stooped posture
  • muscle rigidity (loss of inhibitory signals
  • shuffling gait
27
Q

pathophysiology of ALS

A
  • idiopathic destruction of upper and lower motor neurons (non-inflammatory_
  • universally fatal
28
Q

signs of ALS

A
  • muscle weakness
  • slurred speach
  • loss of coordination
29
Q

Brain tumors are most often ____________ (primary / metastatic)

A

metastatic

30
Q

The most common type of non-metastatic brain tumor is _______ which is generally _______ (benign / malignant)

A

meningioma, benign

31
Q

the most common primary brain tumor is __________ which is generally ________ (benign / malignant)

A

glioblastoma, malignant!!

32
Q

A common form of primary brain tumor which is malignant but with a good prognosis is:

A

astrocytoma

33
Q

Signs of a cluster headache

A
  • stabbing unilateral retroorbital pain
  • tearing or nasal discharge
  • 0.5-3 hours, often multiple times daily for months
34
Q

Signs of a migraine headache

A
  • pulsating/throbbing unilateral or bilateral supraorbital pain in head
  • 4 hours to 3 days
  • often preceded by aura
  • N/V
35
Q

Signs of tension headache

A
  • dull, aching headache
  • several hour duration
  • no N/V or other associated symptoms