Cranial Nerves Flashcards
1
Q
How many cranial nerves are there
A
12 pairs
2
Q
What is CN I
A
Olfactory
3
Q
What is CN II
A
Optic
4
Q
What is CN III
A
Oculomotor
5
Q
What is CN IV
A
Trochlear
6
Q
What is CN V
A
Trigeminal
7
Q
What is CN VI
A
Abducens
8
Q
What is CN VII
A
Facial
9
Q
What is CN VIII
A
Vestibulocochlear
10
Q
What is CN IX
A
Glossopharyngeal
11
Q
What is CN X
A
Vagus
12
Q
What is CN XI
A
Accessory
13
Q
What is CN XII
A
Hypoglossal
14
Q
What do efferent (motor) nerves do
A
Carry information from the brain to the periphery
15
Q
What do afferent (sensory) nerves do
A
Carry information from the periphery to the brain
16
Q
Is the olfactory nerve (S,M or both)
A
Sensory
17
Q
Is the optic nerve (S,M or both)
A
Sensory
18
Q
Is the oculomotor nerve (S,M or both)
A
Motor
19
Q
Is the trochlear nerve (S,M or both)
A
Motor
20
Q
Is the trigeminal nerve (S,M or both)
A
Both
21
Q
Is the abducens nerve (S,M or both)
A
Motor
22
Q
Is the facial nerve (S,M or both)
A
Both
23
Q
Is the vestibulocochlear nerve (S,M or both)
A
Sensory
24
Q
Is the glossopharyngeal nerve (S,M or both)
A
Both
25
Is the vagus nerve (S,M or both)
Both
26
Is the accessory nerve (S,M or both)
Motor
27
Is the hypoglossal nerve (S,M or both)
Motor
28
What is a somatic nerve
Carries information to/from the skin or skeletal muscles
29
What is a visceral nerve
Carries information to/from internal organs
30
What is the function of the olfactory nerve
Sense of smell
31
What is the function of the optic nerve
Sense of sight
32
What is the function of the oculomotor nerve
Controls lens shape
Iris diameter
Movement of inferior oblique and rectus m
33
What is the function of the trochlear nerve
Movement of superior oblique m
34
What is the function of the trigeminal nerve
Motor - mastication and floods of mouth
Sense - for face, skin, mouth, nose and eyes
35
What is the function of the abducens nerve
Movement of lateral rectus m
36
What is the function of the facial nerve
Motor - muscles of facial expression, salivation
Sensory - taste anterior 2/3 of tongue
37
What is the function of the vestibulocochlear nerve
Sensory - equilibrium and hearing
38
What is the function of the glossopharyngeal nerve
Motor - pharyngeal muscles for gagging, swallowing, uvula and salivation
Sensory - taste posterior 1/3 of tongue
39
What is the function of the vagus nerve
Motor/sensory - pharynx and larynx - abdominal viscera
Motor - heart
40
What is the function of the accessory nerve
Proprioception in soft palate, pharynx, larynx, head and shoulders
Motor - movement of sternocleidomastoid, trapezius
41
What is the function of the hypoglossal nerve
Motor - tongue
42
Which skull foramina does the olfactory nerve exit from
Cribriform plate
43
Which skull foramina does the optic nerve exit from
Optic canal
44
Which skull foramina does the oculomotor nerve exit from
Superior orbital fissure
45
Which skull foramina does the trochlear nerve exit from
Superior orbital fissure
46
Which skull foramina does the abducens nerve exit from
Superior orbital fissure
47
Which skull foramina does the facial nerve exit from
Internal acoustic meatus
48
Which skull foramina does the vestibulocochlear nerve exit from
Internal acoustic meatus
49
Which skull foramina does the glossopharyngeal nerve exit from
Jugular foramen
50
Which skull foramina does the vagus nerve exit from
Jugular foramen
51
Which skull foramina does the accessory nerve exit from
Jugular foramen
52
Which skull foramina does the hypoglossal nerve exit from
Hypoglossal canal
53
List the 3 trigeminal nerves
Opthalmic - V1
Maxillary - V2
Mandibular - V3
54
What is the function of the opthalmic nerve
Sensory to skin of the upper third of the face
55
What is the function of the maxillary nerve
Sensory to middle third of the face, upper teeth and upper jaw
56
What is the function of the mandibular nerve
Sensory to lower third of the face, the lower jaw and anterior 2/3 of the tongue
Motor to the muscles of mastication
57
Which skull foramina does the opthalmic nerve exit from
Superior orbital fissure
58
Which skull foramina does the maxillary nerve exit from
Foramen rotundum
59
Which skull foramina does the mandibular nerve exit from
Foramen ovale
60
Which nerve does the foramen spinosum allow to exit
The mandibular meningeal branch
61
Which foramina does the mandibular meningeal branch exit from
Foramen spinosum
62
Why are the cranial nerves part of the peripheral nervous system
Because they innervate anatomical structures of the head and neck and do not solely stay within the central nervous system
63
What is the origin of the olfactory nerve
Olfactory epithelium
64
What is the origin of the optic nerve
Retina
65
What is the origin of the oculomotor nerve
Midbrain
66
What is the origin of the trochlear nerve
Midbrain
67
What is the origin of the trigeminal nerve
Pons
68
What is the origin of the abducens nerve
Pons
69
What is the origin of the facial nerve
Pons
70
What is the origin of the vestibulocochlear nerve
Cochlea and semi circular canals
71
What is the origin of the glossopharyngeal nerve
Medulla oblongata
72
What is the origin of the vagus nerve
Medulla oblongata
73
What is the origin of the accessory nerve
Medulla oblongata
74
What is the origin of the hypoglossal nerve
Medulla oblongata
