Cranial Nerves Flashcards
(96 cards)
1
Q
Receptors on dendrites of nerves, axons synapse in the brain
A
sensory cranial nerves
2
Q
afferent or efferent: fibers of sensory cranial nerves
A
afferent
3
Q
list the sensory cranial nerves
A
Olfactory
Optic
Vestibulocochlear
4
Q
Cell bodies in the brain, axons extend into muscles to make you move
A
motor cranial nerves
5
Q
efferent or afferent: motor cranial nerves
A
efferent
6
Q
list the motor cranial nerves
A
Oculomotor Trochlear Abducens Spinal accessory Hypoglossal
7
Q
list the mixed cranial nerves
A
Trigeminal
Facial
Glossopharyngeal
Vagus
8
Q
these nerves have 2 branches with afferent and efferent fibers
A
mixed cranial nerves
9
Q
cranial nerve 1
A
olfactory
10
Q
origin of olfactory
A
receptor cells in olfactory epithelium (nose)
11
Q
function of olfactory
A
smell
12
Q
type: olfactory
A
sensory
13
Q
destination of olfactory
A
olfactory bulb
14
Q
cranial nerve II
A
optic
15
Q
function of optic
A
vision
16
Q
origin of optic
A
arises from the retina of the eye
17
Q
destination of optic
A
fibers terminate in the thalamus
18
Q
cranial nerve III
A
oculomotor
19
Q
type of nerve for oculomotor
A
motor
20
Q
function of oculomotor
A
- raising eyelid
- directing eyeball
- constricting the iris
- controlling lens shape of the eye
21
Q
origin of oculomotor
A
- fibers originate in ventral midbrain
- superior colliculus
22
Q
destination of oculomotor
A
axons synapse on the extrinsic eye muscles
23
Q
cranial nerve IV
A
trochlear
24
Q
type of cranial nerve for trochlear
A
motor
25
function of trochlear
controls the downward movement of the eyeball
26
origin of trochlear
midbrain
27
destination of trochlear
fibers innervate muscles that move the eye
28
cranial nerve V
trigeminal
29
type of nerve for trigeminal
sensory and motor
30
function of trigeminal for sensory
- relays touch position and pain-temperature sensory information from the face and mouth
- (scalp, forehead, nose, cheeks, lower jaw, gums, and teeth)
31
origin of trigeminal for sensory
- receptors in face
| - come together in trigeminal ganglion
32
destination of trigeminal for sensory
terminate in the pons
33
function of trigeminal for motor
controls muscles that produce movements for chewing
34
origin of trigeminal for motor
pons
35
destination of trigeminal for motor
axons synapse on muscles of jaw
36
cranial nerve VI
abducens
37
what kind of nerve for abducens
motor
38
function of abducens
move eyes laterally
39
origin for abducens
pons
40
destination for abducens
axons synapse on muscles of the eye
41
cranial nerve VII
facial nerve
42
what kind of nerve for facial nerve
sensory and motor
43
function of facial nerve for sensory
taste from the anterior 2/3 of the tongue
44
origin of facial nerve for sensory
anterior 2/3 of tongue
45
destination of facial nerve for sensory
pons
46
function of facial nerve for motor
- move muscles needed to produce facial expressions, salivation, tear production
47
origin of facial nerve for motor
pons
48
destination of facial nerve for motor
- muscles of the face (facial expression)
| - glands
49
miracle berry
- sour things taste sweet
50
what happens when you consume a miracle berry
activates T1R2-T1R3 in the presence of an acid
51
Gymnema Sylvestre
prevents detection of sweet tastes
52
what happens when you consume a Gymnema Sylvestre
- blocks sweet things from binding to the T1R3 part of the T1R2-T1R3 receptor
53
cranial nerve VIII
vestibulocochlear
54
what type of nerve for vestibulocochlear
sensory
55
function of vestibulocochlear
sensory
56
functions of vestibulocochlear
hearing and balance
57
origin of vestibulocochlear
inner ear
58
vestibulocochlear
pons-medulla border
59
Cranial nerve IX (9)
glossopharyngeal
60
what type of nerve for glossopharyngeal?
sensory and motor
61
function of vestibulocochlear for sensory
- relays taste information from posterior 1/3 of the tongue and sensory information from the pharyngeal walls
62
origin of vestibulocochlear for sensory
receptors in tongue and pharynx
63
destination of vestibulocochlear for sensory
sensory fibers terminate in the medulla
64
function of vestibulocochlear for motor
swallowing and gag reflex
65
origin of vestibulocochlear for motor
medulla
66
destination of vestibulocochlear for motor
- project to and terminate on muscles of tongue and throat
67
cranial nerve X
vagus
68
what type of nerve for vagus
sensory and motor
69
function of vagus for sensory
- parasympathetic nervous system
| - conducts visceral sensory information about heart, lungs, and most abdominal organs
70
origin of vagus for sensory
sensory receptors in visceral organs, pharynx, larynx, and soft palate
71
destination of vagus for sensory
medulla
72
functions of vagus for motor
- stimulates muscles in the pharynx, larynx and the soft palate
- stimulates movement in visceral organs
73
stimulate muscles in the heart to lower resting heart rate
cranial nerve X
vagus
MOTOR
74
involuntary contraction in the digestive tract (esophagus, stomach, and intestines) which allow food to move through the tract
cranial nerve X
vagus
MOTOR
75
origin of vagus for motor
medulla
76
destination of vagus for motor
motor fibers project to smooth muscle in organs of thoracic and abdominal cavities
77
the only cranial nerve that extends beyond the head and neck
vagus
78
where do opthalmic fibers originate
- scalp
- forehead
- eyes
- bridge of nose
79
where do maxillary fibers originate
- lower eyelid
- middle of nose
- cheeks
- upper lip
- roof of mouth
80
where do mandibular fibers originate
- outer ear
- lower jaw
- front and middle of tongue
- inner ear
- chin
81
Conducts motor information to the extraocular eye muscles to control movement of the eyeball
cranial nerve III
| oculomotor
82
Conducts motor information to the intraocular eye muscles to control pupil size & lens shape.
cranial nerve III
| oculomotor
83
cranial nerve XI
accessory (spinal accessory)
84
what type of nerve for spinal accessory
motor
85
function of spinal accessory
movement of the neck and head
86
origin of spinal accessory
- medulla
| - superior spinal cord
87
destination of spinal accessory
- fibers terminate in the sternocleidomastoid and trapezius muscles of the head and neck
88
cranial nerve XII
hypoglossal
89
what type of nerve for hypoglossal
motor
90
function of hypoglossal
speech and swallowing
91
origin of hypoglossal
fibers arise from hypoglossal nucleus in the medulla
92
destination of hypoglossal
fibers innervates muscles of the tongue
93
way to remember olfactory
you only have 1 nose
| CN I
94
way to remember optic
you have 2 eyes
| CN II
95
way to remember trochlear
trochlear sounds like truck and trucks have 4 wheel drive
| - CN IV
96
way to remember abducens
- you want to have 6-pack abs
| - CN VI
