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Step 1 > Neuro > Flashcards

Neuro Flashcards

1
Q

Dermatome: Posterior half of a skull cap

A

C2

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2
Q

Dermatome: High turleneck

A

C3

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3
Q

Dermatome: Low collar shirt

A

C4

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4
Q

Dermatome: Includes the thumbs

A

C6

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5
Q

Dermatome: The nipple line

A

T4

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6
Q

Dermatome: umbillicus

A

T10

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7
Q

Dermatome: at the inguinal ligament

A

L1

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8
Q

Dermatome: includes the kneecaps

A

L4

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9
Q

Dermatome: erection and sensation of penile and anal zones

A

S2, S3, S4

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10
Q

S1, (S2)

A

Buckle my shoe

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11
Q

(L3), L4

A

Kick the door

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12
Q

C5, (C6)

A

Pick up sticks

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13
Q

C7, (C8)

A

Lay them straight

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14
Q

L1, L2

A

Testicle move

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15
Q

S3, S4

A

Winks galore

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16
Q

Effect, Afferent, Efferent of Pupillary Light Reflex

A

Light induced pupil constriction, CN2, CN3

17
Q

Effect, Afferent, Efferent of Corneal Reflex

A

Corneal simulation causes orbicularis oculi to contract eyelids, CN5 ophthalmic branch, CN7

18
Q

Effect, Afferent, Efferent of Jaw-Jerk Reflex

A

Stretch reflex stimulating masseter contraction, CN5 mandibular branch sensory from muscle spindles, CN5 mandibular branch

19
Q

Effect, Afferent, Efferent of Vestibulo-ocular Reflex

A

Compensatory eye movements that provide image stabilization when head/body moves, CN8 vestibular component, CN3 CN4 and CN6

20
Q

Effect, Afferent, Efferent of Carotid Sinus Reflex

A

Increased carotid sinus pressure decreased heart rate and blood pressure, CN9, CN10 (sympathetic tone also inhibited)

21
Q

Effect, Afferent, Efferent of Cough Reflex

A

Cough induced by upper respiratory tract irritation, CN10, CN10

22
Q

Effect, Afferent, Efferent of Gag Reflex

A

Reflex contraction of the pharyngeal constrictor muscles evoked by touching the back of the throat, CN9, CN10

23
Q

Nerve roots of Sciatic nerve

A

L4-S3 nerve roots

24
Q

Compression (due to what) at which level most common of sciatica

A

L5 or S1 (due to disc herniation or spinal foraminal stenosis)

25
Q

Ataxic gait, urinary incontinence, and dementia in an elderly patient

A

Normal pressure hydrocephalus

26
Q

Mechanism of injury in normal pressure hydrocephalus

A

Decreased absorption of CSF leads to increased CSF volume and ventricular enlargement, traction placed on cortical efferent and afferent nerve fibers in the corona radiata –> no sensation of bladder fullness or control over micturition –> bladder empties reflexively when full i.e. urge incontinence. Voluntary relaxation of the urethral sphincter remains in tact.

27
Q

Upper motor neuron injury signs

A

Spastic paralysis, clasp knife rigidity, hyperreflexia, Babinski sign

28
Q

Lower motor neuron injury signs

A

Flaccid paralysis, hypotonia, hyporeflexia, Muscle atrophy and fasiculations

Step 1 (18 decks)

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