Cranial Nerves

Question 1

Which CN are found in the midbrain?

Answer 1

CN 3 &4

Question 2

Which CN are found in the pons?

Answer 2

CN 5-8

Question 3

Which CN are found in the cerebellopontine angle?

Answer 3

CN 5, 7, 8

Question 4

Which CN are found in the medulla?

Answer 4

CN 9-12

Question 5

Which CN exit the superior orbital fissure?

Answer 5

3, 4, 6

Question 6

Which CN exit the foramen rotundum?

Answer 6

maxillary 5

Question 7

Which CN exit the foramen ovale?

Answer 7

mandibular 5

Question 8

Which CN exit the internal auditory meatus?

Answer 8

7, 8

Question 9

Which CN exit the jugular foramen?

Answer 9

9, 10, 11

Question 10

Where do the olfactory tracts mainly project to?

Answer 10

uncus of temporal lobe

Question 11

What is the most common cause of anosmia?

Answer 11

common cold

Question 12

What is Foster-Kennedy Syndrome?

Answer 12

tumor at the base of the frontal lobe

• ipsilateral optic atrophy
• papilledema in contralateral eye
• central scotoma ipsilateral eye
• anosmia ipsilaterally

Question 13

What is the Marcus-Gunn phenomenon?

Answer 13

when the pupil dilates with light introduction

Question 14

Open angle glaucoma

Answer 14

no warning symptoms
peripheral loss
tunnel vision

Question 15

Angle closure glaucoma

Answer 15

symptomatic, painful
halos around lights
eye redness
cloudy vision
medical emergency

Question 16

Congenital glaucoma

Answer 16

abnormal eye development

Question 17

Secondary glaucoma

Answer 17

corticosteroids

uveitis systemic diseases

Question 18

What does macular degeneration cause?

Answer 18

• loss of vision in center of visual field-
• drusen bodies
• blurry vision

Question 19

Symptoms of diabetic retinopathy

Answer 19

• blurred or slow loss of vision
• floating stars
• shadows or missing areas
• trouble with night vision

Question 20

Hypertensive retinopathy symptoms

Answer 20

• double vision
• headaches
• visual disturbances

Question 21

Melanoma eye symptoms

Answer 21

• blurred vision
• pupil shape change
• vision disturbances

Question 22

Primary optic atrophy

Answer 22

changes in color and structure of the optic disc associated with variable degrees of dysfunction

Question 23

Secondary optic atrophy

Answer 23

papilledema
may include neuritis
glaucoma
increased intracranial pressure

Question 24

Holmes-Adie Syndrome

Answer 24

• one pupil is larger, constricts slowly to light
• DTR absetn (achilles)
• unilateral sweatiness

Question 25

Which ganglia are affected in Holmes-Adie Syndrome?

Answer 25

ciliary ganglion

dorsal root ganglion

Question 26

Argyl-Robertson Pupil

Answer 26

• specific for neurosyphilis

- small pupil constricts poorly to direct light, but well in accommodation

Question 27

Horner’s Syndrome

Answer 27

• sympathetic hypofunction
• ptosis
• miosis
• facial anhydrosis
• ipsilateral facial vasodilation

Question 28

What coordinates eye movements by interconnecting the nuclei?

Answer 28

medial longitudinal fasciculus

Question 29

What three things happen with accommodation?

Answer 29

• convergence
• pupilloconstriction
• lens thickening

Question 30

Heterotopia

Answer 30

deviation of bilateral eye alignment

Question 31

Aguesia

Answer 31

loss of taste

Question 32

Dyssynergia

Answer 32

uncoordinated movement

Question 33

Dysmetria

Answer 33

inaccuracy in measuring distance

Question 34

Pallanasthesia

Answer 34

loss of vibration sense