Cranial Nerves

Front 1

Cranial nerve(s) arising from the spinal cord?

Back 1

CN XI

Front 2

Cranial nerve(s) arising from the medulla oblongata?

Back 2

CN IX, X, XII

Front 3

Cranial nerve(s) arising from the pontomedullary junction?

Back 3

CN VII, VIII

Front 4

Cranial nerve(s) arising from the pons?

Back 4

CN V, VII

Front 5

Cranial nerve(s) arising from the midbrain?

Back 5

CN III, IV

Front 6

Cranial nerve(s) arising from the diencephalon?

Back 6

CN II

Front 7

Cranial nerve(s) arising from the telencephalon?

Back 7

CN I

Front 8

Signs of Foster Kennedy syndrome?

Back 8

(olfactory groove meningioma), IL anosmia, IL optic atrophy, CL papilledema

Front 9

Cranial nerve sensory ganglia?

Back 9

trigeminal, geniculate, superior and inferior ganglia (CN IX, X)

Front 10

Cranial nerve motor ganglia?

Back 10

ciliary, pterygopalatine, submandibular, otic, intramural (CN X)

Front 11

Nerves traversing the jugular foramen?

Back 11

CN IX, X, XI

Front 12

Nerves traversing the supraorbital fissure?

Back 12

CN III, IV, VI, V2

Front 13

Nerves traversing the cavernous sinus?

Back 13

CN III, IV, VI, V1 and V2

Front 14

Nerves traversing the foramen rotundum?

Back 14

CN V2

Front 15

Nerves traversing the foramen ovale?

Back 15

CN V3

Front 16

Nerves traversing the foramen magnum?

Back 16

CN XI

Front 17

Nerves traversing the internal auditory meatus?

Back 17

CN VII, VIII

Front 18

Nerves traversing the stylomastoid foramen?

Back 18

CN VII

Front 19

Nuclei for CN III?

Back 19

oculomotor, Edinger-Westphal

Front 20

Nuclei for CN IV?

Back 20

trochlear

Front 21

What CN decussates before exiting the brainstem?

Back 21

CN IV

Front 22

Nuclei for CN V?

Back 22

chief sensory nucleus, mesencephalic, spinal trigeminal, trigeminal motor nucleus

Front 23

Nuclei for CN VI?

Back 23

abducens

Front 24

Nuclei for CN VII?

Back 24

facial, superior salivatory, spinal trigeminal, solitary

Front 25

Nuclei for CN IX?

Back 25

nucleus ambiguous, inferior salivatory, spinal trigeminal, solitary

Front 26

Nuclei for CN X?

Back 26

nucleus ambiguous, dorsal vagal, spinal trigeminal, solitary

Front 27

Nuclei for CN XI?

Back 27

accessory nucleus (cervical spinal cord)

Front 28

Nuclei for CN XII?

Back 28

hypoglossal

Front 29

Muscles innervated by CN III?

Back 29

superior rectus, medial rectus, inferior oblique, inferior rectus, ciliary muscle, constrictor pupillae

Front 30

Three components of the near triad?

Back 30

convergance of eyes, pupillary constriction, contraction of ciliary muscle

Front 31

Muscles innervated by CN IV?

Back 31

superior oblique

Front 32

Muscles innervated by CN VI?

Back 32

lateral rectus

Front 33

Nerve most likely injured with aneurysm of ICA in cavernous sinus?

Back 33

CN VI

Front 34

Signs of diabetic infarct in CN III?

Back 34

oculomotor palsy with normal pupil

Front 35

Signs of compressive injury to CN III?

Back 35

dilated pupil with normal eye movements

Front 36

Sign of injury to CN IV?

Back 36

head tilt to opposite side

Front 37

Site of horizontal gaze center?

Back 37

pons

Front 38

Site of vertical gaze center?

Back 38

midbrain

Front 39

Signs of Argyll-Robertson pupil?

Back 39

pupil accomadates but doesn’t react [to light]; tertiary syphillis

Front 40

Signs of injury to right MLF?

Back 40

[occurs in MS!] on leftward gaze, right eye does not adduct (convergance intact)

Front 41

Signs of injury to the right abducens nerve?

Back 41

IL CN VI palsy, cannot abduct eye

Front 42

Sign of injury to right abducens nucleus?

Back 42

on rightward gaze, R eye does not abduct, L eye does not adduct

Front 43

Eye movement deficits in right medial pontine syndrome?

Back 43

on rightward gaze, R eye does not abduct, L eye does not adduct + on leftward gaze R eye does not adduct

Front 44

Three causes of ptosis?

Back 44

CN III palsy, Horner syndrome, myasthenia gravis

Front 45

Muscles innervated by CN V?

Back 45

temporalis, masseter, medial and lateral pterygoid, ant digastric, tensor tympani, tensor veli palatinin, mylohyoid

Front 46

Muscles innervated by CN VII?

Back 46

muscles of facial expression, post digastic, stapedius

Front 47

Muscles innervated by CN IX?

Back 47

stylohyoid

Front 48

Muscles innervated by CN X?

Back 48

laryngeal, pharyngeal, esophageal

Front 49

Muscles innervated by CN XI?

Back 49

trapezius, SCM

Front 50

Muscles innervated by CN XII?

Back 50

genioglossus, hyoglossus, styloglossus, instrinsic tongue muscles

Front 51

Skin innervated by CN V?

Back 51

face [V1 - forehead, upper eyelid + nose; V2 - cheek, lower eyelid, upper lip; V3 - jaw, lower lip]

Front 52

Skin innervated by CN VII, IX and X?

Back 52

small area around ear

Front 53

What is Ramsay Hunt syndrome?

Back 53

herpes infection in the geniculate ganglion

Front 54

Signs of Ramsay Hunt syndrome?

Back 54

IL facial paralysis, hyperacusis, loss of taste, herpes vesicles on external ear, canal

Front 55

Viscera innervated by CN III?

Back 55

sphincter pupillar, ciliary muscle

Front 56

Viscera innervated by CN VII?

Back 56

nasal cavity, oral cavity, submandibular, sublingual glands

Front 57

Viscera innervated by CN IX?

Back 57

parotid gland, mucosa of middle ear

Front 58

Viscera innervated by CN X?

Back 58

larynx, pharynx, foregut, midgut

Front 59

CN, ganglia and nucleus for taste at the anterior 2/3s of tongue?

Back 59

CN VII, geniculate, solitary

Front 60

General sensory innervation to anterior 2/3 of tongue?

Back 60

CN V

Front 61

Signs of CN VII injury at the internal auditory meatus?

Back 61

IL complete facial paralysis, dry eye, dry mouth, hyperacusis, decreased taste on ant 2/3 of tongue + tinnitus/hearing loss (CN VIII)

Front 62

Signs of CN VIII injury in facial canal?

Back 62

IL complete facial paralysis; decreased taste on ant 2/3 of tongue

Front 63

Signs of CN VII injury at the stylomastoid foramen?

Back 63

IL complete facial paralysis

Front 64

Nerves for corneal reflex?

Back 64

CN V + VII

Front 65

Nerves for pupillary light reflex?

Back 65

CN II + III

Front 66

Nerves for jaw jerk?

Back 66

CN V

Front 67

Nerves for cough reflex?

Back 67

CN X (C3-5, intercostal ns)

Front 68

Nerves for gag reflex?

Back 68

CN IX + X

Front 69

CN affected with aneurysm of anterior communicating/ICA?

Back 69

CN II

Front 70

CNs affected with aneurysm of posterior communicating artery?

Back 70

CN III

Front 71

CN affected with aneuryms at basilar bifurcation?

Back 71

CN III

Front 72

CNs affected with aneurysm of PICA?

Back 72

CN IX, X, XI, XII