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Neurosciences > Cranial nerves > Flashcards

Cranial nerves Flashcards

1
Q

Diseases anosmia or hyponosmia can be an early feature of

A

Parkinson’s disease

Alzheimer’s dementia

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2
Q

Area of brain lesion causing blindness in one eye

A

Anterior to the optic chiasm e.g. the optic nerve

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3
Q

Area of brain lesion causing bitemporal hemianopia

A

Optic chiasm

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4
Q

Area of brain lesion causing a left homonymous hemianopia

A

R sided optic tract

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5
Q

Area of brain lesion causing R homonymous hemianopia

A

L sided optic tract

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6
Q

Brain lesions causing enlargement of the blind spot

A

Anything causing swelling of the optic discs

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7
Q

Area of brain lesion causing a superior quadrantanopia

A

Contralateral Temporal lobe

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8
Q

Area of brain lesion causing an inferior quadrantanopia

A

Contralateral parietal lobe

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9
Q

Area of brain lesion causing cortical blindness

A

Occipital lobe

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10
Q

Origin of the olfactory nerve

A

Cerebrum

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11
Q

Exit of the olfactory nerve

A

Cribriform plate

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12
Q

Origin of the optic nerve

A

Retinal ganglion cells

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13
Q

Exit of the optic nerve

A

Optic canal

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14
Q

Origin of the oculomotor nerve

A

Anterior aspect of the midbrain

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15
Q

Exit of the oculomotor nerve

A

Superior orbital fissure

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16
Q

Origin of the trochlear nerve

A

Dorsal aspect of the midbrain

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17
Q

Exit of the trochlear nerve

A

Superior orbital fissure

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18
Q

Origin of the trigeminal nerve

A

Pons

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19
Q

Exit of the ophthalmic branch of the trigeminal nerve

A

Superior orbital fissure

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20
Q

Exit of the maxillary branch of the trigeminal nerve

A

Foramen rotundum

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21
Q

Exit of the mandibular branch of the trigeminal nerve

A

Foramen ovale

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22
Q

Origin of the abducens nerve

A

Pons

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23
Q

Exit of the abducens nerve

A

Superior orbital fissure

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24
Q

Origin of the facial nerve

A

Pons

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25
Q

Exit of the facial nerve

A

Internal acoustic meatus

Stylomastoid foramen

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26
Q

Origin of the vestibulocochlear nerve

A

Cerebellopontine angle

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27
Q

Exit of the vestibulocochlear nerve

A

Internal acoustic meatus

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28
Q

Origin of the glossopharyngeal nerve

A

Medulla

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29
Q

Exit of the glossopharyngeal nerve

A

Jugular foramen

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30
Q

Origin of the vagus nerve

A

Medulla

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31
Q

Exit of the vagus nerve

A

Jugular foramen

32
Q

Origin of the accessory nerve

A

Cranial and spinal roots

33
Q

Exit of the accessory nerve

A

Jugular foramen

34
Q

Origin of the hypoglossal nerve

A

Medulla

35
Q

Exit of the hypoglossal nerve

A

Hypoglossal canal

36
Q

Function of the olfactory nerve

A

Sense of smell

37
Q

Function of the olfactory nerve - motor/sensory/both

A

Sensory

38
Q

Function of the optic nerve

A

Eyesight

39
Q

Function of the optic nerve - motor/sensory/both

A

Sensory

40
Q

Function of the oculomotor nerve

A

Innervates the eye muscles apart from the superior oblique and the lateral rectus
Eye movements apart from abduction and depression while adducted

41
Q

Muscles innervated by the oculomotor nerve

A 
Levator palpabrae superioris
Superior rectus
Medial rectus
Inferior rectus
Inferior oblique
42
Q

Function of the oculomotor nerve - motor/sensory/both

A

Motor

43
Q

Function of the trochlear nerve

A

Innervates the superior oblique muscle

Depression while adducted and internal rotation of the eye

44
Q

Function of the trochlear nerve - motor/sensory/both

A

Motor

45
Q

Function of the trigeminal nerve

A

Sensation of the face

Innervates muscles of mastication

46
Q

Function of the trigeminal nerve - motor/sensory/both

A

Both

47
Q

Function of the abducens nerve

A

Innervates the lateral rectus

Abducts the eye

48
Q

Function of the abducens nerve - motor/sensory/both

A

Motor

49
Q

Function of the facial nerve

A

Innervates muscles of facial expression
Taste of the anterior 2/3 of the tongue
Corneal reflex

50
Q

Function of the facial nerve - motor/sensory/both

A

Both

51
Q

Function of the vestibulocochlear nerve

A

Sensation of sound

52
Q

Function of the vestibulocochlear nerve - motor/sensory/both

A

Sensory

53
Q

Function of the glossopharyngeal nerve

A

Taste of the poster 1/3 of the tongue
Innervation to the parotid gland
Innervates the stylopharyngeus muscle

54
Q

Function of the glossopharyngeal nerve - motor/sensory/both

A

Both

55
Q

Function of the vagus nerve

A

Innervation to most laryngeal and pharyngeal muscles - controls muscles for voice and the soft palate
Parasympathetic fibres to the thoracic and abdominal viscera

56
Q

Function of the vagus nerve - motor/sensory/both

A

Both

57
Q

Function of the accessory nerve

A

Innervates the sternocleidomastoid and trapezius muscles

58
Q

Function of the accessory nerve - motor/sensory/both

A

Motor

59
Q

Function of the hypoglossal nerve

A

Innervates the muscles of the tongue

60
Q

Function of the hypoglossal nerve - motor/sensory/both

A

Motor

61
Q

Structure which secretes the CSF

A

Choroid plexus

62
Q

Cranial nerve involved for the sensory component of the pupillary light reflex

A

Optic

63
Q

Cranial nerve involved for the motor component of the pupillary light reflex

A

Oculomotor

64
Q

Cranial nerve involved for the sensory component of the accommodation reflex

A

Optic

65
Q

Cranial nerve involved for the motor component of the accommodation reflex

A

Oculomotor

66
Q

Cranial nerve involved for the sensory component of the jaw jerk reflex

A

Trigeminal

67
Q

Cranial nerve involved for the motor component of the jaw jerk reflex

A

Trigeminal

68
Q

Cranial nerve involved for the sensory component of the corneal reflex

A

Trigeminal

69
Q

Cranial nerve involved for the motor component of the corneal reflex

A

Facial

70
Q

Cranial nerve involved for the sensory component of the vestibulo-ocular reflex

A

Vestibulocochlear

71
Q

Cranial nerves involved for the motor component of the vestibulo-ocular reflex

A

Oculomotor
Trochlear
Abducens

72
Q

Cranial nerve involved for the sensory component of the gag reflex

A

Glossopharyngeal

73
Q

Cranial nerve involved for the motor component of the gag reflex

A

Vagus

74
Q

Largest cranial nerve

A

Trigeminal

75
Q

Side the tongue deviates to in a hypoglossal nerve palsy

A

The affected side

Neurosciences (16 decks)

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