Cranial Nerves Flashcards
which nerve innervates most of the muscles to the palate?
vagus CN X
orange arrow cranial nerve
trigeminal nerve CN V
Pink bracket
hypoglossal nerve CN XII
red arrow
CN III Oculomotor nerve
which cranial nerves are located in the hindbrain? (medulla region)
CN IX, CN X, CN XI, CN XII
(glossopharyngeal, vagus, spinal accessory, hypoglossal)
light blue arrow structure
what nerve exits here?
foramen ovale
V3 of trigeminal CN V
Green Arrow cranial nerve
Facial nerve CN VII
Red Arrow structure
Which nerve exits here
hypoglossal canal
hypoglossal nerve CN XII
what does the trochlear nerve CN IV innervate?
superior oblique muscle of the eye
which cranial nerve is sandwiched between the olives and pyramid?
hypoglossal nerve CN XII
which nerve innervates most of the muscles of the pharynx
vagus CN X
three divisions of the trigeminal nerve
ophthalmic nerve V1
maxillary nerve V2
mandibular nerve V3
Blue bracket
Vagus nerve CN X
which cranial nerves are located in the hindbrain? (pons region)
CN V, CN VI, CN VII, CN VIII
(trigeminal, abducent, facial, vestibulocochlear)
Green Arrow
CN I Olfactory nerve
orange arrow cranial nerve
accessory nerve CN XI
vagus nerve CN X carries somatic sensory nerves from what region
some pharynx
all of the larynx
small amount in the external ear canal
Blue arrow structure
Which nerve exits here?
Jugular foramen
glossopharyngel nerve CN IX, vagus nerve CN X, accessory nerve CN XI
to reach their final destinations, most parasympathetic hitchhike on sensory brances of the
trigeminal nerve
which nerve innervates muscles of facial expression?
facial nerve CN VII
Pink Arrow structure
What nerve exits here
foramen rotundum
V2 of trigeminal nerve CN V
What does the abducent nerve CN VI innervate?
lateral rectus muscle of the eye
Path accessory nerve CN XI takes in and out of the skull
in the foramen magnum, exits the jugular foramen
light blue arrow cranial nerve
Abducent nerve CN VI
Green Arrow
Glossopharyngeal nerve CN IX
Blue arrow cranial nerve
vestibulocochlear CN VIII
Red arrow cranial nerve
oculomotor nerve CN III
purple arrow
CN IV Trochlear nerve
Green Arrow structure:
What nerve exits?
Cirbiform plate
CN I, olfactory nerve
Blue Arrow
Motor Root of Trigeminal nerve CN V
pink arrow cranial nerve
trochlear nerve CN IV
which cranial nerve innervates muscles that are involved in mastication?
mandibular nerve CN V3
Which cranial nerves are located in the midbrain?
CN III, CN IV (oculomotor, trochlear)
Blue arrow cranial nerve
optic nerve CN II
Blue arrow structure:
What nerve exits here?
optic canal
optic nerve CN II
What is Stern’s third law?
All muscles with gloss- in the name are innervated by hypoglossal nerve CN XII
which cranial nerves are located on the olive?
glossopharyngeal CN IX, vagus nerve CN X
Glossopharyngeal nerve CN IX carries somatic sensory from what region
posterior third of the tongue, pharynx, middle ear
Which cranial nerve takes the longest route through the cavernous sinus?
Abducent nerve CN VI
which nerve innervates most of the muscles of the toungue?
hypoglossal nerve CN XII
What is Stern’s second law?
all muscles with palat- in the name are innervated by vagus nerve CN X
Red Arrow structure:
What nerve exits here?
Superior orbital fissure
oculomotor CN III, trochlear CN IV, V1 of trigeminal nerve CN V, Abducent nerve CN VI
Red Arrow
Abducent nerve CN VI
Which 4 cranial nerves carry presynaptic parasympathetic fibers out of the brain
cranial nerves: 3-9-7-7
go to ganglia: C-O-P-S
vagus nerve carries these fibers but does not synpase in any of the head ganglia
which nerve innervates tensor muscles?
mandibular nerve CN V3
Green Arrow
Sensory root of Trigeminal nerve CN V
pink arrow cranial nerve
vagus nerve CN X
Yellow Arrow
Vestibulocochlear nerve CN VIII
which root of trigeminal is larger?
sensory root
Green arrow cranial nerve
olfactory nerve CN I
the hypoglosasl canal is located just lateral to which structure
foramen magnum
Red Arrow cranial nerve
glossopharyngeal CN IX
The facial nerve CN VII carries somatic sensory from:
little region of external ear
What is Stern’s first law
all muscles with tensor in the name are innervated by CN V3 (mandibular)
What structure is located between the greater and lesser wings of the sphenoid bone?
superior orbital fissure
Blue Arrow
CN II Optic nerve
light blue arrow cranial nerve
hypoglossal nerve CN XII
Which cranial nerves are located in the forebrain?
CN I and CN II (olfactory and optic)
which cranial nerves pass through the cavernous sinus?
CN III, CN IV, CN V, CN VI
Pink Arrow
Facial Nerve CN VII
Which cranial nerve is the largest
Trigeminal CN V
What does the glossopharyngeal CN IX nerve innervate?
stylopharyngeus muscle (in the pharynx)
which cranial nerve innervates the muscles of the eye (mostly)
oculomotor nerve CN III
Green arrow structure
What nerve exits here?
Internal acoustic meatus
Facial nerve CN VII, vestibulocochlear nerve CN VIII
What are the four parasympathetic ganglia in the head
ciliary ganglion
pterygopalatine ganglion
otic ganglion
submadibular ganglion
Red arrow
spinal accessory nerve CN XI
What does the spinal accessory nerve CN XI innervate?
sternocleidomastoid
trapezius
which nerve innervates muscles of the larynx
vagus CN X
cranial nerves traveling to the orbit must travel through:
optic canal or superior orbital fissure
