Intro To Cranial Nerves

Front 1

How many pairs of cranial nerves are there?

Back 1

12

Front 2

What are the three cranial nerves that are special sensory only?

Back 2

I-Olfartory nerve
II-Optic nerve
VIII-Vestibulocochlear nerve

Front 3

What are the cranial nerves that are motor only?

Back 3

III- Oculomotor
IV-Trochlear
VI- Abducent nerve
XI-Spinal Accessory nerve
XII-Hypoglossal nerve

Front 4

What are the mixed spinal nerves?

Back 4

V Trigeminal nerve
VII Facial nerve
IX Glossopharyngeal
X Vagus

Front 5

What special senses does the (VIII) Vestibulocochlear nerve do?

Back 5

Hearing and balance

Front 6

Cranial nerves are a part of what part of the autonomic nervous system?

Back 6

Parasympathetic

Front 7

Cell bodies in the brainstem send axons to muscles of pharyngeal arch origin
(muscles of mastication and face expression)

Back 7

Branchial motor BE

Front 8

Cell bodies in brainstem send axons through CN and branches to the skeletal muslces (ocular muscles, tongue, SCM, etc)

Back 8

Somatic motor GSE

Front 9

Cell bodies in brainstem send axons
(preganglionic fibers) to autonomic (parasympathetic) ganglia to synapse.
Postganglionic fibers continue to innervate smooth muscles and glands
(e.g., lacrimal gland, sphincter pupillae muscle)

Back 9

GVE Visceral motor

Front 10

Transmit general sensation (touch, pressure,
temperature) from the skin and mucous membrane .

Back 10

GSA General sensory fibers

Front 11

Transmit sensation from the viscera ,
they carry mainly pain and afferent fibers for reflexes.
(e.g., carotid body and carotid sinus, pharynx, larynx, trachea).

Back 11

Visceral sensory fibers GVA

Front 12

Convey taste and smell (special visceral
afferent fibers), serve the special senses of vision, hearing and balance
(special somatic afferent fibers)

Back 12

Special sensory fibers SA

Front 13

Which nerve carries all five components?

Back 13

Vagus nerve

Front 14

What fibers are found in the olfactory nerve CN I?
Exit the skull via?
Cell bodies?

Back 14

SA
About 20 exit the foramina in the cribiform plate of the ethmoid bone to the olfactory bulb
Cell bodies are in the olfactory epithelium in the roof of the nasal cavity

Front 15

What fibers are found in the optic nerve CN II?
Exit the skull via?
Cell bodies?

Back 15

SA-vision
Pass through the optic canal to enter the middle cranial fossa, where the form the optic chiasm
Cell bodies located in the ganglion cells in the retina

Front 16

What fibers are found in the Vestibulocochlear nerve CN VIII?
Exit the skull via?
Cell bodies?

Back 16

SA-hearing and balance
Emerges from the junction of the pons and medulla and exits cranium through the internal acoustic meatus
Cell bodies in the vestibular and spiral ganglion

Front 17

What does the vestibulocochlear nerve seperate into?

Back 17

Vestibular nerve-balance
Cochlear nerve- hearing

Front 18

What fibers are found in the Oculomotor nerve CN III?
Exit the skull via?
Cell bodies?

Back 18

GSE, GVE
Exits through superior orbital fissure and splits to inferior and superior. (inferior carries GVE)
Cell bodies in midbrain(Parasympathetic synapse in ciliary ganglion)

Front 19

What does the motor component of CN III innervate?

Back 19

Four extraocular muscles

Front 20

What does the GVE(parasympathetic) innervate from cranial nerve III?

Back 20

sphincter of pupil and ciliary muscles

Front 21

What fibers are found in the Trochlear nerve CN IV?
Exit the skull via?
Cell bodies?
Innervates?

Back 21

GSE
Cell bodies in midbrain
Pass through superior orbital fissure
Innervate superior oblique muscle

Front 22

What fibers are found in the abducent nerve CN VI?
Exit the skull via?
Cell bodies?
Innervate?

Back 22

GSE
Superior Orbital Fissure
Cell bodies in Pons
Lateral rectus muscle

Front 23

What fibers are found in the spinal accessory nerve CN XI?
Exit the skull via?
Cell bodies?
Innervates?

Back 23

BE
Jugular foramen
Cell bodies in spinal cord C1-C5
External branch innervates SCM and trapezius
Internal branch travels with vagus

Front 24

What fibers are found in the hypoglossal nerve CN XII?
Exit the skull via?
Cell bodies?
Innervates?

Back 24

GSE
hypoglossal canal
Cell bodies in medulla
supplies intrinsic and extrinsic muscles of the tongue

Front 25

What fibers hitch a ride with CN XII and what do they supply?

Back 25

GSA from C1-cranial dura matter
GSE from C1-thyrohyoid and geniohyoid muscles

Front 26

What nerve is found in the submandibular triangle?

Back 26

Hypoglossal nerve CN XII

Front 27

What fibers are found in the trigeminal nerve CN V?
Cell bodies?
Innervate?

Back 27

BE and GSA
Cell bodies in trigeminal ganglia (GSA) and Pons (BE)
BE-muslces of mastication, mylohyoid, anterior belly of digastric, tensor veli palatini, tensor tympani
GSA-skin of face and forehead, oral and nasal cavity

Front 28

What fibers are found in the facial nerve CN VII?
Exit the skull via?
Cell bodies?
Innervate?

Back 28

BE-muscles of facial expression
GVE-lacrimal, submandibular, sublingual
SA-taste
GSA-skin close to external ear
Cell bodies in pons, geniculate ganglion, pterygopalatine ganglion, submandibular ganglion
Exit via internal acoustic meatus

Front 29

What are the two divisions of the facial nerve?

Back 29

Large Motor root(BE)
Small Intermediate nerve(SA, GSA, GVE)

Front 30

What does the facial nerve give rise to?

Back 30

Greater petrosal
Nerve to stapedius
Chorda tympani nerve

Front 31

What is the course of the facial nerve?

Back 31

travels through posterior cranial fossa, internal acoustic meatus, facial canal, stylomastoid foramen

Front 32

Name the ganglion?
Sensory ganglion of CN VII (GSA)

Back 32

Geniculate ganglion

Front 33

Name the ganglion?
associated with the CN V2 (GVE) (postgang fibers to the lacrimal gland)

Back 33

Pterygopalatine ganglion

Front 34

Name the ganglion?
associated with CN V3 (GVE-postgang fibers to sublingual and submandibular glands)

Back 34

submandibular ganglion

Front 35

BE fibers of facial nerve innervate?

Back 35

muscles of facial expression, stylohyoid, posterior belly of digastric, stapedius muscle

Front 36

GSA fibers of facial nerve innervate?

Back 36

external acoustic meatus, skin posterior to the ear

Front 37

GVE fibers of facial nerve innervate?

Back 37

Lacrimal gland (tearing)
Sublingual, submandibular, nasal and palantine glands (saliva production)

Front 38

SA fibers of facial nerve innervate?

Back 38

anterior 2/3 of tongue-taste

Front 39

What fibers are found in the glossopharyngeal nerve CN IX?
Innervate?
Exit the skull via?
Cell bodies?

Back 39

BE-stylopharyngeus muscle
GVE-parotid gland
SA- posterior 1/3 tongue(taste)
GVA-pharynx, carotid body and sinus, middle ear, palantine tonsil
Exit via Jugular foramen
Cell bodies in medulla(BE), otic ganglion(GVE), superior and inferior ganglia(sensory SA and GVA)

Front 40

What fibers are found in the Vagus nerve CN X?
Exit the skull via?
Cell bodies?

Back 40

BE, GVE, SA, GVA, GSA
Exit Jugular foramen
Cell bodies in medulla and superior and inferior ganglia(sensory)

Front 41

BE fibers of Vagus innervate?

Back 41

all muscles of larynx and pharynx (except sytlopharyngeus), palate and one tongue muscle

Front 42

GVE fibers of vagus innervate?

Back 42

parasympathetic fibers to the
thoracic and abdominal viscera ( to the 2/3 of transverse colon)

Front 43

SA from Vagus innervate?

Back 43

taste from root of tongue and epiglottis

Front 44

GVA from Vagus innervate?

Back 44

from pharynx, larynx, carotid sinus, carotid body and thoracic and abdominal viscera.

Front 45

GSA from Vagus innervate?

Back 45

general sensation from the external ear and dura in posterior cranial fossa

Front 46

what nerves pass through the jugular foramen?

Back 46

IX, X, XI

Front 47

Only nerve to travel to the thorax and not stop in the head and neck

Back 47

Vagus nerve

Front 48

name the ganglion?
parasympathetic from parotid gland, associated with V3
GVE from glossopharyngeal

Back 48

otic ganglion

Front 49

What ganglion?
parasympathetic fibers with CN III – innervation:
sphincter pupillae muscle and ciliary muscles.

Back 49

Ciliary

Front 50

What ganglion?
parasympathetic fibers with CN VII – innervation:
submandibular and sublingual glands

Back 50

Submandibular

Front 51

What ganglion?
parasympathetic fibers with CN VII – innervation:
lacrimal gland.

Back 51

Pterygopalatine

Front 52

What ganglion?
parasympathetic fibers with CN IX – innervation:
parotid gland

Back 52

Otic