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Neuroscience 1 > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

1
Q

Receptors on dendrites of nerves, axons synapse in the brain

A

sensory cranial nerves

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2
Q

afferent or efferent: fibers of sensory cranial nerves

A

afferent

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3
Q

list the sensory cranial nerves

A

Olfactory
Optic
Vestibulocochlear

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4
Q

Cell bodies in the brain, axons extend into muscles to make you move

A

motor cranial nerves

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5
Q

efferent or afferent: motor cranial nerves

A

efferent

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6
Q

list the motor cranial nerves

A 
Oculomotor
Trochlear
Abducens
Spinal accessory
Hypoglossal
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7
Q

list the mixed cranial nerves

A

Trigeminal
Facial
Glossopharyngeal
Vagus

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8
Q

these nerves have 2 branches with afferent and efferent fibers

A

mixed cranial nerves

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9
Q

cranial nerve 1

A

olfactory

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10
Q

origin of olfactory

A

receptor cells in olfactory epithelium (nose)

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11
Q

function of olfactory

A

smell

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12
Q

type: olfactory

A

sensory

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13
Q

destination of olfactory

A

olfactory bulb

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14
Q

cranial nerve II

A

optic

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15
Q

function of optic

A

vision

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16
Q

origin of optic

A

arises from the retina of the eye

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17
Q

destination of optic

A

fibers terminate in the thalamus

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18
Q

cranial nerve III

A

oculomotor

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19
Q

type of nerve for oculomotor

A

motor

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20
Q

function of oculomotor

A
  • raising eyelid
  • directing eyeball
  • constricting the iris
  • controlling lens shape of the eye
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21
Q

origin of oculomotor

A
  • fibers originate in ventral midbrain

- superior colliculus

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22
Q

destination of oculomotor

A

axons synapse on the extrinsic eye muscles

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23
Q

cranial nerve IV

A

trochlear

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24
Q

type of cranial nerve for trochlear

A

motor

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25
Q

function of trochlear

A

controls the downward movement of the eyeball

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26
Q

origin of trochlear

A

midbrain

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27
Q

destination of trochlear

A

fibers innervate muscles that move the eye

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28
Q

cranial nerve V

A

trigeminal

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29
Q

type of nerve for trigeminal

A

sensory and motor

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30
Q

function of trigeminal for sensory

A
  • relays touch position and pain-temperature sensory information from the face and mouth
  • (scalp, forehead, nose, cheeks, lower jaw, gums, and teeth)
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31
Q

origin of trigeminal for sensory

A
  • receptors in face

- come together in trigeminal ganglion

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32
Q

destination of trigeminal for sensory

A

terminate in the pons

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33
Q

function of trigeminal for motor

A

controls muscles that produce movements for chewing

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34
Q

origin of trigeminal for motor

A

pons

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35
Q

destination of trigeminal for motor

A

axons synapse on muscles of jaw

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36
Q

cranial nerve VI

A

abducens

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37
Q

what kind of nerve for abducens

A

motor

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38
Q

function of abducens

A

move eyes laterally

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39
Q

origin for abducens

A

pons

40
Q

destination for abducens

A

axons synapse on muscles of the eye

41
Q

cranial nerve VII

A

facial nerve

42
Q

what kind of nerve for facial nerve

A

sensory and motor

43
Q

function of facial nerve for sensory

A

taste from the anterior 2/3 of the tongue

44
Q

origin of facial nerve for sensory

A

anterior 2/3 of tongue

45
Q

destination of facial nerve for sensory

A

pons

46
Q

function of facial nerve for motor

A
  • move muscles needed to produce facial expressions, salivation, tear production
47
Q

origin of facial nerve for motor

A

pons

48
Q

destination of facial nerve for motor

A
  • muscles of the face (facial expression)

- glands

49
Q

miracle berry

A
  • sour things taste sweet
50
Q

what happens when you consume a miracle berry

A

activates T1R2-T1R3 in the presence of an acid

51
Q

Gymnema Sylvestre

A

prevents detection of sweet tastes

52
Q

what happens when you consume a Gymnema Sylvestre

A
  • blocks sweet things from binding to the T1R3 part of the T1R2-T1R3 receptor
53
Q

cranial nerve VIII

A

vestibulocochlear

54
Q

what type of nerve for vestibulocochlear

A

sensory

55
Q

function of vestibulocochlear

A

sensory

56
Q

functions of vestibulocochlear

A

hearing and balance

57
Q

origin of vestibulocochlear

A

inner ear

58
Q

vestibulocochlear

A

pons-medulla border

59
Q

Cranial nerve IX (9)

A

glossopharyngeal

60
Q

what type of nerve for glossopharyngeal?

A

sensory and motor

61
Q

function of vestibulocochlear for sensory

A
  • relays taste information from posterior 1/3 of the tongue and sensory information from the pharyngeal walls
62
Q

origin of vestibulocochlear for sensory

A

receptors in tongue and pharynx

63
Q

destination of vestibulocochlear for sensory

A

sensory fibers terminate in the medulla

64
Q

function of vestibulocochlear for motor

A

swallowing and gag reflex

65
Q

origin of vestibulocochlear for motor

A

medulla

66
Q

destination of vestibulocochlear for motor

A
  • project to and terminate on muscles of tongue and throat
67
Q

cranial nerve X

A

vagus

68
Q

what type of nerve for vagus

A

sensory and motor

69
Q

function of vagus for sensory

A
  • parasympathetic nervous system

- conducts visceral sensory information about heart, lungs, and most abdominal organs

70
Q

origin of vagus for sensory

A

sensory receptors in visceral organs, pharynx, larynx, and soft palate

71
Q

destination of vagus for sensory

A

medulla

72
Q

functions of vagus for motor

A
  • stimulates muscles in the pharynx, larynx and the soft palate
  • stimulates movement in visceral organs
73
Q

stimulate muscles in the heart to lower resting heart rate

A

cranial nerve X
vagus
MOTOR

74
Q

involuntary contraction in the digestive tract (esophagus, stomach, and intestines) which allow food to move through the tract

A

cranial nerve X
vagus
MOTOR

75
Q

origin of vagus for motor

A

medulla

76
Q

destination of vagus for motor

A

motor fibers project to smooth muscle in organs of thoracic and abdominal cavities

77
Q

the only cranial nerve that extends beyond the head and neck

A

vagus

78
Q

where do opthalmic fibers originate

A
  • scalp
  • forehead
  • eyes
  • bridge of nose
79
Q

where do maxillary fibers originate

A
  • lower eyelid
  • middle of nose
  • cheeks
  • upper lip
  • roof of mouth
80
Q

where do mandibular fibers originate

A
  • outer ear
  • lower jaw
  • front and middle of tongue
  • inner ear
  • chin
81
Q

Conducts motor information to the extraocular eye muscles to control movement of the eyeball

A

cranial nerve III

oculomotor

82
Q

Conducts motor information to the intraocular eye muscles to control pupil size & lens shape.

A

cranial nerve III

oculomotor

83
Q

cranial nerve XI

A

accessory (spinal accessory)

84
Q

what type of nerve for spinal accessory

A

motor

85
Q

function of spinal accessory

A

movement of the neck and head

86
Q

origin of spinal accessory

A
  • medulla

- superior spinal cord

87
Q

destination of spinal accessory

A
  • fibers terminate in the sternocleidomastoid and trapezius muscles of the head and neck
88
Q

cranial nerve XII

A

hypoglossal

89
Q

what type of nerve for hypoglossal

A

motor

90
Q

function of hypoglossal

A

speech and swallowing

91
Q

origin of hypoglossal

A

fibers arise from hypoglossal nucleus in the medulla

92
Q

destination of hypoglossal

A

fibers innervates muscles of the tongue

93
Q

way to remember olfactory

A

you only have 1 nose

CN I

94
Q

way to remember optic

A

you have 2 eyes

CN II

95
Q

way to remember trochlear

A

trochlear sounds like truck and trucks have 4 wheel drive

- CN IV

96
Q

way to remember abducens

A
  • you want to have 6-pack abs

- CN VI

Neuroscience 1 (15 decks)

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