Cranial Nerves Flashcards
1
Q
CN I
A
Olfactory N.
2
Q
CN II
A
Optic N.
3
Q
CN III
A
Occulomotor N.
4
Q
CN IV
A
Trochlear N.
5
Q
CN VI
A
Abducent N.
6
Q
CN VII
A
Facial N.
7
Q
CN VIII
A
Vestibulocochlear N.
8
Q
CN IX
A
Glossopharyngeal N.
9
Q
CN X
A
Vagus N. *parasympathetic innervation to viscera of thorax, foregut and midgut
10
Q
CN XI
A
Accessory N.
11
Q
CN XII
A
Hypoglossal N.
12
Q
Functions of Cranial Nerves
A
General sensation from tissues of the head, five special sensory functions, motor innvervation to skeletal muscles of the head, autonomic innervation of smooth muscle and glands of the head
13
Q
divisions of trigeminal nerve
A
V1: Opthalmic V2:MaxillaryV3: Mandibular
14
Q
Type of fibers that CN’s carry
A
GSA, GSE, GVA, GVE, BE, SA (each will carry a specific combination of these and no one CN will carry all 6)
15
Q
Sensory Only CN’s
A
I, II, VIII
16
Q
Motor Only CN’s
A
III, IV, VI, XI, XII
17
Q
Motor and Sensory Mixed CN’s
A
V, VII, IX, X
18
Q
Pairs of Spinal Nerves
A
31
19
Q
Pairs of Cranial Nerves
A
12
20
Q
CN V: Peripheral Sensory ganglia
A
Trigeminal (V1, V2, V3)
21
Q
CN VII Peripheral Sensory Ganglia
A
Geniculate
22
Q
CN VIII Peripheral Sensory ganglia
A
Vestibular and Spiral
23
Q
CN IX Peripheral sensory ganglia
A
Inferior and superior
24
Q
CN X peripheral sensory ganglia
A
Superior and inferior
25
SSA is responsible for what senses
vision hearing equilibrium taste and smell
26
GSE is responsible for what
motor innervation to skeletal muscle in the head derived from somite mesoderm
27
Crainial Nerve GVE fibers are responsible for what
PARASYMPATHETIC motor innervation to smooth muscle and glands of the head.
28
CN's with GVE capabilities
III, VII, IX, X
29
Special Motor (Branchiomeric Motor BE)
motor to skeletal muscle in the head derived from branchial (pharyngeal arch) mesoderm
30
First Pharyngeal arch (mandibular arch) is innervated by
V3 mandibular
31
Second Pharyngeal Arch (hyoid arch) is innervated by
VII facial
32
Third Pharyngeal Arch is innervated by
IX Glossopharyngeal
33
Fourth and sixth pharyngeal arches
X Vagus
34
GSA Cell Bodies
DRG (Pseudounipolar)
35
GSE Cell Bodies
Ventral Horn of Spinal cord gray mater
36
SSA cell bodies are located
Peripheral Sensory Ganglia (eg. trigeminal and geniculate)
37
BE cell bodies are located
Brainstem motor nuclei (multipolar)
38
CN I and II have sensory function but are not associated with organized sensory ganglia (True or False)
True
39
Sensory neurons of CN I are located where
Diffusely dispersed in Olfactory bulb
40
Sensory neurons of CNII are located where
Diffusely dispersed in the retina
41
Brainstem motor nuclei are analogous to what
ventral horn of the spinal cord gray matter
42
Peripheral Sensory Ganglia of CN's are analogous to what
Dorsal Root ganglia
43
Spinal GVA cell bodies
dorsal root ganglia
44
Spinal Sympathetic preganglionic fibers arise from which segments
TI-L2 (lateral horn of spinal cord gray matter)
45
Spinal Post ganglionic sympathetic cell bodies are found where
chain ganglia, collateral ganglia,
46
spinal parasympathetic preganglionic cell bodies are located where
S2-S4 in the spinal cord gray matter
47
post ganglionic cell bodies of spinal parasympathetics are found where
in terminal motor ganglia on or near the target viscera which they supply
48
Targets of parasympathetic in spinal nerves
viscera of hing gut and pelvis
49
Targets of Spinal sympathetic fibers
Sweat Glands, Smooth Muscle, Viscera of the body wall, Head, Thorax, Abdomen and pelvis
50
Cranial Nerve Preganglionic Sympathetic Cell Bodies
Spinal Cord Gray Matter (T1-T2)
51
CN Post Ganglionic Sympathetic Cell bodies
superior cervical chain ganglia
52
Course of post ganglionic sympathetic fibers
do not typically course with cranial nerves, ins stead they form peri-arterial plexus which surounds the internal carotid artery
53
Cranial Nerve GVA sensory cell bodies are found where
Superior and Inferior Sensory Ganglia of CN IX and X
54
Cranial Nerve Parasympathetic Preganglionic Cell bodies
Brainstem motor nuclei of CN III, VII, IX, and X
55
CN Parasympathetic Postganglionic cell bodies
Terminal motor ganglia of the head (Cilliary, submandibular, otic, pterygopalatine) of intrinsic motor ganglia of the thorax, foregut and midgut
56
Terminal motor ganglia of CN III
Cilliary
57
Terminal Motor Ganglia of CN VII
Submandibular, Pterygopalatine
58
Terminal Motor Ganglia of CN IX
Otic
59
Terminal Motor Ganglia of CN X
Intrinsic ganglia of the viscera of the thorax, foregut and midgut
60
CN's with sensory function only
CN I, CN II. and CN VIII *only carry SA special sensory
61
SA function of CN I
olfaction
62
SA function of CN II
vision
63
SA function of CN VIII
Hearing and Equilibrium
64
CN's with motor function only
III occulomotor, IV trochlear, VI abducent, XI accesory, XII hypoglossal
65
GSE function of CN III: Occulomotor
motor to 5 extraocular muscles (levator palpebrae superioris, superior rectus, inferior rectus, medial rectus and inferior oblique)
66
GSE function of CN IV :Trochlear
motor to one extraoccular muscle (superior oblique)
67
GSE function of CN VI: Abducent
motor innervation to one extraoccular muscle (lateral rectus)
68
GSE function of CN XI: Accessory
Motor to trapezius and sternocleidomastoid muscles
69
GSE function of CN XII: Hypoglossal
motor to 3 extrinsic muscles of the tongue (hypoglossus, genioglossus, styloglossus) and all the intrinsic muscles of the tongue
70
Mixed function CN's
V, VII, IX, and X
71
CN V contains which fibers
GSA, BE
72
CN VII carries which fibers
GSA, SA, BE, GVE
73
CN IX carries which fibers
GSA, GVA, SA, BE, GVE
74
CN X carries which fibers
GSA, GVA, SA, BE, GVE
75
CN V : Trigeminal GSA sensory from
skin of the face and scalp, conjunctiva, globe, orbit, meninges, teeth, gums, external ear, nasal cavity, nasal sinuses, oral cavity and anterior 2/3 of the tongue
76
CN VII: Facial relays GSA sensory from
external ear
77
CN V: Trigeminal BE innervation to
muscles derives from 1st arch (V3 only)
78
CN VII: Facial relays SA sensory from
tastes from the anterior 2/3 of the tongue and soft palate
79
CN VII: Facial supplies BE innervation to
Muscles of the second arch
80
CN VII: facial supplies GVE innervation to
parasympathetic motor innveration to lacrimal, submandibular and sublingual glands, mucous glands of the membranes of the oral cavity, nasal cavity and soft palate.
81
CN IX: Glossopharyngeal relays GSA from
sensory from the external ear, mucous membrane of tympanic membrane, auditory tube, posterior 1/3 of the tongue, oropharynx and posterior aspect of nasopharynx
82
CN IX: Glossopharyngeal relays GVA from
sensory from the carotid sinus
83
CN IX: Glossopharyngeal relays SA from
taste from posterior 1/3 of the tongue
84
CN IX supplies BE innervation to
muscles of the 3rd arch
85
CN IX supplies GVE innveration to
parasympathetic innervation to the parotid gland
86
CN X relays GSA sensory from
external ear, lower 1/3 of the pharyngeal mucosa and esophagus, laryngeal mucosa and root of the tongue
87
CN X relays GVA sensory from
the carotid body and baro-receptors and viscera of the thorax, foregut and midgut
88
CN X relays SA from
taste from the base of the tongue and epiglottis (root of the tongue)
89
CN X supplies BE innervation to
"all the muscles of the larynx, all the muscles fo the palate (except tensor vali palatini (V-3), all the muscles of the pharynx (except stylopharyngeus) muscles of the 4th/6th arch *remember 5th is rudamentary
90
CN X: Vagus supplies GVE innveration to
parasympathetic innervation to viscera, smooth muscle and glands in the trachea, esophagus, thoracic and abdominal viscera (Foregut and midgut)
91
auricular nerve
CN X: GSA to external ear
92
meningeal nerve
CN X: GSA to the dura in the posterior cranial fossa
93
sinus nerve
CN X: GVA to the carotid body
94
Pharyngeal nerve
CN X: BE to palatoglossus, all muscles of the pharynx (except stylopharyngeus) and all the muscles of the soft palat (except tensor veli palatini)
95
Internal Branch of superior laryngeal nerve
GSA to mucosal lining of the laryngopharynx downt ot eh vocal folds, GVE parasympathetic to glands of the pharynx, GSA to the root of the tongue and epiglottis
96
external branch of the superior laryngeal nerve
BE to cricothyroid muscle
97
recurrent (inferior) laryngeal
BE to all other muscles of the vocal folds (except cricothyroid), GSA to mucosal lining of the larynx below the vocal folds
98
Cardiac branches
GVE paraympathetic to heart
