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Physiology MRCP > Cranial nerves > Flashcards

Cranial nerves Flashcards

1
Q

CN I

A

Olfactory nerve
Smell

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2
Q

CN I pathway

A

Cribriform plateC

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3
Q

CN II

A

Optic
Sight

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4
Q

CN II pathway

A

Optic canal

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5
Q

CN III

A

Oculomotor
Eye movements (except SO and LR)
Pupil constriction
Accommodation
Eyelid opening

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6
Q

CN III palsy

A

Ptosis
Down and out eye
Dilated, fixed pupil

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7
Q

CN III pathway

A

Superior orbital fissure

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8
Q

CN IV

A

Trochlear
Superior oblique

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9
Q

CN IV palsy

A

Defective downward gaze –> vertical diplopia

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10
Q

CN IV pathway

A

Superior orbital fissure

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11
Q

CN V

A

Trigeminal nerve
Facial sensation
Mastication

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12
Q

CN V palsy

A

Trigeminal neuralgia
Loss of corneal reflex
Loss of facial sensation
Paralysis of mastication muscles
Deviation of jaw to weak side

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13
Q

CN V pathway

A

V1 - supraorbital fissure
V2 - foramen rotundum
V3 - foramen ovale

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14
Q

CN VI

A

Abducens
Lateral rectus

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15
Q

CN VI palsy

A

Defective abduction –> horizontal diplopia

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16
Q

CN VI pathway

A

Supraorbital fissure

17
Q

CN VII

A

Facial nerve
Facial movement
Taste - anterior 2/3 tongue
Lacrimation
Salivation

18
Q

CN VII palsy

A

Flaccid paralysis of lower and upper face
Loss of corneal reflex
Loss of taste
Hyperacusis

19
Q

CN VII path

A

Internal auditory meatus

20
Q

CN VIII

A

Vestibulocochlear nerve
Hearing and balance

21
Q

CN VIII path

A

Internal auditory meatus

22
Q

CN XI

A

Glossopharyngeal
Taste - posterior 1/3 tongue
Salivation
Swallow
Input from carotid body and sinus

23
Q

CN IX path

A

Gugular foramen

24
Q

CN X

A

Vagus
Phonation
Swallow
Viscera

25
Q

CN X palsy

A

Uvula deviates AWAY from affected side

26
Q

CN X path

A

Jugular foramen

27
Q

CN XI

A

Accessory
Head and shoulder movement

28
Q

CN XI path

A

Jugular foramen

29
Q

CN XII

A

Hypoglossal
Tongue movement

30
Q

CN XII path

A

Hypoglossal canal

31
Q

CN XII palsy

A

Tongue deviates towards affected side

32
Q

Cranial nerve mneumonic

A

Oh Oh Oh To Touch And Feel Very Good Velvet, Ah Heaven

33
Q

Cranial nerve motor, sensory or both mnemonic

A

Some Say Marry Money But My Brother Says Big Brains Matter Most

34
Q

Corneal reflex

A

Afferent - opthalmic V1
Efferent - facial VII

35
Q

Jaw jerk

A

Afferent - mandibular V3
Efferent - mendibular V3

36
Q

Gag reflex

A

Afferent - glossopharyngeal IX
Efferent - vagal X

37
Q

Carotid sinus

A

Afferent - glossopharyngeal IX
Efferent - vagal X

38
Q

Pupillary light

A

Afferent - optic III
Efferent - oculomotor III

39
Q

Lacrimation

A

Afferent - ophthalmic V1
Efferent - facial VII

Physiology MRCP (20 decks)

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