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Gwen - Neurology > Cranial Nerves (pass medicine) > Flashcards

Cranial Nerves (pass medicine) Flashcards

1
Q

Olfactory nerve - function

A

Smell

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2
Q

Olfactory nerve - pathway/foramen

A

Cribriform plate

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3
Q

Optic nerve - function

A

Sight

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4
Q

Optic nerve - pathway/foramen

A

Optic canal

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5
Q

Occulomotor nerve - function

A

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

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6
Q

Occulomotor nerve - clinical

A

Palsy results in
ptosis
‘down and out’ eye
dilated, fixed pupil

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7
Q

Occulomotor - pathway/foramen

A

Superior orbital fissure (SOF)

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8
Q

Trochlear nerve - function

A

Eye movement (SO)

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9
Q

Trochlear nerve - clinical

A

Palsy results in defective downward gaze → vertical diplopia

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10
Q

Trochlear nerve - pathway/foramen

A

SOF

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11
Q

Trigeminal nerve - function

A

Facial sensation

Mastication

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12
Q

Trigeminal nerve - clinical

A 
Lesions may cause:
trigeminal neuralgia
loss of corneal reflex (afferent)
loss of facial sensation
paralysis of mastication muscles
deviation of jaw to weak side
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13
Q

Trigeminal nerve - pathway/foramen

A

V1: SOF,
V2: Foramen rotundum,
V3: Foramen ovale

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14
Q

Abducens nerve - function

A

Eye movement (LR)

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15
Q

Abducens nerve - clinical

A

Palsy results in defective abduction → horizontal diplopia

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16
Q

Abducens - pathway/foramen

A

SOF

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17
Q

Facial nerve - function

A

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

18
Q

Facial nerve - clinical

A 
Lesions may result in:
flaccid paralysis of upper + lower face
loss of corneal reflex (efferent)
loss of taste
hyperacusis
19
Q

Facial nerve - pathway/foramen

A

Internal auditory meatus

20
Q

Vestibulocochlear nerve - function

A

Hearing, blanace

21
Q

Vestibulocochlear nerve - clinical

A

Hearing loss
Vertigo, nystagmus
Acoustic neuromas are Schwann cell tumours of the cochlear nerve

22
Q

Vestibulocochlear nerve - pathway/foramen

A

Internal auditory meauts

23
Q

Glossopharyneal nerve - function

A

Taste (posterior 1/3rd of tongue)
Salivation
Swallowing
Mediates input from carotid body & sinus

24
Q

Glossopharyngeal nerve - clinical

A

Lesions may result in;
hypersensitive carotid sinus reflex
loss of gag reflex (afferent)

25
Q

Glossopharyngeal nerve - pathway/foramen

A

Jugular foramen

26
Q

Vagus nerve - function

A

Phonation
Swallowing
Innervates viscera

27
Q

Vagus nerve - clinical

A

Lesions may result in;
uvula deviates away from site of lesion
loss of gag reflex (efferent)

28
Q

Vagus nerve - pathway/forman

A

Jugular foramen

29
Q

Accessory nerve - function

A

Head and shoulder movement

30
Q

Accessory nerve - clinical

A

Lesions may result in;

weakness turning head to contralateral side

31
Q

Accessory nerve - pathway/foramen

A

Jugular foramen

32
Q

Hypoglossal nerve - function

A

Tongue movement

33
Q

Hypoglossal nerve - clinical

A

Tongue deviates towards side of lesion

34
Q

Hypoglossal nerve - pathway/foramen

A

Hypoglossal canal

35
Q

Corneal reflex afferent and efferent limb

A

Afferent: ophthalmic (V1)
Efferent: Facial (V2)

36
Q

Jaw jerk afferent and efferent limb

A

Afferent: Mandibular nerve (V3)
Efferent: Mandibular nerve (V3)

37
Q

Gag afferent and efferent limb

A

Afferent: Glossopharyngeal nerve (IX)
Efferent: Vagal nerve (X)

38
Q

Carotid sinus afferent and efferent limb

A

Afferent: Glossopharyngeal (IX)
Efferent: Vagal nerve (X)

39
Q

Pupillary light afferent and efferent limb

A

Afferent: Optic nerve (I)
Efferent: Occulomotor (III)

40
Q

Lacrimation afferent and efferent limb

A

Afferent: Ophthalmic nerve (V1)
Efferent: Facial nerve (VII)

Gwen - Neurology (38 decks)

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