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Finals - Neurology > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

1
Q

What is the I cranial nerve?

A

Olfactory (I)

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2
Q

What is the II cranial nerve?

A

Optic (II)

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3
Q

What is the III cranial nerve?

A

Oculomotor (III)

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4
Q

What is the IV cranial nerve?

A

Trochlear (IV)

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5
Q

What is the V cranial nerve?

A

Trigeminal (V)

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6
Q

What is the VI cranial nerve?

A

Abducens (VI)

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7
Q

What is the VII cranial nerve?

A

Facial (VII)

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8
Q

What is the IX cranial nerve?

A

Glossopharyngeal (IX)

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9
Q

What is the X cranial nerve?

A

Vagus (X)

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10
Q

What is the XI cranial nerve?

A

Accessory (XI)

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11
Q

What is the XII cranial nerve?

A

Hypoglossal (XII)

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12
Q

What is the mneumonic for remembering the function of the cranial nerves?

A 
Some 
Say
Marry
Money
But 
My 
Brother
Says
Big
Boobs/Brains
Matter
More
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13
Q

What is the function of the I (1) cranial nerve?

A

Sensory (Some) - Olfactory

Smell

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14
Q

What is the function of the II (2) cranial nerve?

A

Sensory (Say) - Optic

Sight

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15
Q

What is the function of the III (3) cranial nerve?

A

Motor (Marry) - Oculomotor

Eye movement (MR, IO, SR, IR)
Pupil constriction
Accommodation
Eyelid opening

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16
Q

What is the clinical presentation of a lesion to the III (3) cranial nerve?

A

Facial nerve palsy

Prostitute Eye - (3)
Ptosis (Hooded Lid)
‘Down and Out’ Eye
Dilated, fixed pupil

17
Q

What is the function of the IV (4) cranial nerve?

A

Motor (Money) - Trochlear

Eye movement (SO)

18
Q

What is the clinical presentation of a lesion to the IV (4) cranial nerve?

A

Defective downwards gaze –> Vertical diplopia

19
Q

What is the function of the V (5) cranial nerve?

A

Both (But) - Trigeminal

Facial sensation
Mastication

20
Q

What is the clinical presentation of a lesion to the V (5) cranial nerve?

A 
Trigeminal - Legion may cause: 
TRIGEMINAL neuralgia
Loss of corneal reflex (afferent)
Loss of facial sensation
Paralysis of mastication muscles
Deviation of jaw to weak side
21
Q

What is the function of the VI (6) cranial nerve?

A

Motor (My) - Abducens

Eye movement (LR)

22
Q

What is the clinical presentation of a lesion to the VI (6) cranial nerve?

A

Defective abduction –> Horizontal diplopia

23
Q

What is the function of the VII (7) cranial nerve?

A

Both (Brother) - Facial

Facial movement
Taste (Anterior 2/3 of tongue)
Lacrimation
Salivation

24
Q

What is the clinical presentation of a lesion to the VII (7) cranial nerve?

A 
Lesions may result in:
Flaccid paralysis of the upper + lower face (LMN - no forehead sparing)
Loss of corneal reflex (efferent)
Loss of taste 
Hyperacusis (painful sounds)
25
Q

What is the function of the VIII (8) cranial nerve?

A

Sensory (Says) - Vestibulocochlear

Hearing
Balance

26
Q

What is the clinical presentation of a lesion to the VIII (8) cranial nerve?

A

Hearing loss
Vertigo
Nystagmus
(Can be caused by acoustic neuromas)

27
Q

What is the function of the IX (9) cranial nerve?

A

Both (Big) - Glossopharyngeal

Taste (Posterior 1/3 of tongue)
Salivation
Swallowing
Mediates input from carotid body and sinus

28
Q

What is the clinical presentation of a lesion to the IX (9) cranial nerve?

A

Hypersensitive carotid sinus reflex

Loss of gag reflex (afferent)

29
Q

What is the function of the X (10) cranial nerve?

A

Both (Brains/Boobs) - Vagus

Phonation
Swallowing
Innervates viscera

30
Q

What is the clinical presentation of a lesion to the X (10) cranial nerve?

A

Ulva deviates away from the site of lesion

Loss of gag reflex (efferent0

31
Q

What is the function of the XI (11) cranial nerve?

A

Motor (Matter) - Accessory

Head and shoulder movement

32
Q

What is the clinical presentation of a lesion to the XI (11) cranial nerve?

A

Weakness in turning head to contralateral side

33
Q

What is the function of the XII (12) cranial nerve?

A

Motor (More) - Hypoglossal

Tongue movement

34
Q

What is the clinical presentation of a lesion to the XII (12) cranial nerve?

A

Tongue deviates towards side of lesion.

Finals - Neurology (18 decks)

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