cranial nerves

Question 1

Name the CNs in order

Answer 1

olfactory
optic
oculomotor
trochlea
trigeminal
abducens
facial
vestibulocochlear
glossopharyngeal
vagus
accessory
hypoglossal

Question 2

which bones make up orbit

Answer 2

frontal, zygomatic, maxilla, nasal, sphenoid, ethmoid, lacrimal

Question 3

what goes through the optic canal

Answer 3

optic nerve

opthalmic artery

Question 4

what goes through the superior orbital fissure

Answer 4

CN 3
CN 4
CN 5
CN 6
Superior opthalmic vein
Inferior ophthalmic vein

Question 5

extraocular muscles

Answer 5

superior rectus
inferior rectus
medial rectus
lateral rectus
superior oblique
inferior oblique

Question 6

what movement does the superior oblique cause

Answer 6

intorsion, depression, abduction

Question 7

what movement does inferior oblique cause

Answer 7

extorsion, elevation, abduction

Question 8

which intraocular muscles does oculomotor innervate

Answer 8

sr, mr, ir, io

Question 9

which intraocular muscle does trochlea innervate

Answer 9

so

Question 10

which intraocular muscle does abducent innervate

Answer 10

lr

Question 11

inf rectus eye movement

Answer 11

depress, adduct

Question 12

sup rectus eye movement

Answer 12

elevate, adducts

Question 13

medial rec eye movement

Answer 13

adduction

Question 14

lat rectus eye movement

Answer 14

abduction

Question 15

oculomotor palsy

Answer 15

eye in down and out position
eye slightly closes
dilated pupil

Question 16

trochlear palsy

Answer 16

up and in eye position

Question 17

abducens palsy

Answer 17

effected eye cannot abduct

appears normal when looking forward

Question 18

horners syndrome

Answer 18

pupil constricts

ptosis

Question 19

parts of trigeminal nerve

Answer 19

v1 opthalmic
v2 maxillary
v3 mandibular

Question 20

v1 opthalmic innervation

Answer 20

sensory to eye

parasympathetic to lacrimal gland

Question 21

v2 maxillary innervation

Answer 21

sensory to superior dentition, gums, palate, maxillary air sinuses

Question 22

v3 mandicular innervation

Answer 22

motor to muscles of mastication
inferior alveolar - sensory to lower dentition
lingual - sensory to ant 2/3 of tongue

Question 23

branches of vs mandibular nerve

Answer 23

inferior alveolar

lingual

Question 24

what trigeminal branch passes through the orbital fissure

Answer 24

opthalmic

Question 25

what trigeminal branch passes through the foramen rotundum

Answer 25

maxillary

Question 26

what trigeminal branch passes through the foramen ovale

Answer 26

mandibular

Question 27

which is the only trigeminal branch with a motor root

Answer 27

mandibular

Question 28

paralysis of trigeminal

Answer 28

paralysed muscles of mastication loss of face sensation loss of corneal reflex

Question 29

abducens innervation

Answer 29

Motor to the lateral rectus muscle of the eye

Question 30

which fissure does abducens exit the skull through

Answer 30

superior orbital

Question 31

which fissure does facial nerve exit the skull through

Answer 31

internal acoustic meatus

Question 32

facial nerve motor root branches

Answer 32

motor root chorda tympani great petrosal nerve

Question 33

facial nerve divisions

Answer 33

``` temporal zygomatic buccal marginal mandibular cervical Two Zombies Bit My Cat ```

Question 34

facial nerve path

Answer 34

Motor neurones originate from primary motor cortex and travel down through the internal capsule and down the corticobulbar tract. Branch of to the facial nucleus in the pons

Question 35

why is the forehead innervated by both sides

Answer 35

upper facial nucleus is innervated bilaterally by upper motor neurons

Question 36

why is the lower face not innervated by both sides of brain

Answer 36

lower motor neurons only supplied by opposite side of brain

Question 37

bells palsy

Answer 37

facial muscle paralysis. Lower half of face paralyzed as well as one side of the forehead droopy eyelid, dry eye or excessive tears. Drooping corner of mouth, impaired taste, dry mouth.

Question 38

Contralateral Stroke

Answer 38

Affects corticobulbar tract before bilateral innervation | forehead spearing as it is supplied also by other side of brain

Question 39

vestibulocochlear innervation

Answer 39

Vestibular nerve motion and equilibrium | Cochlear nerve hearing

Question 40

which foramen does vestibulocochlear exit skulls through

Answer 40

internal acoustic meatus

Question 41

which foramen does the glossopharyngeal leave skull through

Answer 41

jugular foramen

Question 42

glossopharyngeal innervation

Answer 42

sensory to pharyngeal plexus, oropharynx special to post 1/3 of tongue parasympathetic to

Question 43

which foramen does vagus leave skull through

Answer 43

jugular

Question 44

vagus innervation

Answer 44

sensory to lower pharynx and larynx,and aortic body motor to muscles of palate, pharynx, and larynx, palatoglossus parasympathetic to heart, trachea, bronchial tree, GI tract to L colic flexure

Question 45

vagus branches in neck

Answer 45

``` Auricular nerve Pharyngeal nerves Superior laryngeal nerve Right recurrent laryngeal nerve Left recurrent laryngeal nerve ```

Question 46

spinal accessory foramen

Answer 46

jugular foramen

Question 47

spinal accessory innervation

Answer 47

Motor to the sternocleidomastoid and trapezius

Question 48

hypoglossal foramen

Answer 48

hypoglossal canal

Question 49

hypoglossal innervation

Answer 49

Motor to all intrinsic and extrinsic muscles of the tongue excluding palatoglossus

Question 50

sympathetic supply to head

Answer 50

superior, middle, and inferior ganglia