Block 3

Question 1

Immune-mediated inflammatory condition of the CNS

Answer 1

Granulomatous meningoencephalitis (GME)

Question 2

What is bilateral inflammation of CN II?

Answer 2

Optic neuritis

Question 3

What is optic neuritis a form of?

Answer 3

Granulomatous meningoencephalitis

Question 4

What are the clinical findings of optic neuritis on a fundic exam?

Answer 4

Fuzzy halo forming around the cranial nerve

Question 5

How do you diagnosis optic neuritis?

Answer 5

Spinal tap for CSF analysis

Question 6

What surrounds the optic nerve?

Answer 6

Meninges and CSF

Question 7

How do cats typically get optic neuritis?
How do dogs typically get optic neuritis?

Answer 7

Infectious cause (FIP)
Immune mediated

Question 8

What is inflammation of the motor branches of CNV called?

Answer 8

Trigeminal neuritis

Question 9

What clinical sign occurs with trigeminal neuritis?

Answer 9

Acute onset of inability to close the jaw

Question 10

What age groups are normally affected by trigeminal neuritis

Answer 10

Middle aged to geriatric dogs

Question 11

Why would the CSF generally be normal on a spinal tap of a dog with trigeminal neuritis (unlike optic neuritis)

Answer 11

Trigeminal nerve is a peripheral nerve while the optic nerve is very close to the brain and technically part of the brain

Question 12

What is the most common nerve to develop a nerve sheath tumor?

Answer 12

Trigeminal

Question 13

What is the malignant peripheral nerve sheath tumor of CN V called?

Answer 13

Trigeminal nerve sheath tumor

Question 14

What is a common symptom of trigeminal nerve sheath tumor?

Answer 14

Unilateral, chronic progressive atrophy of the masticate ray muscles

Question 15

What is the difference between trigeminal neuritis and trigeminal nerve sheath tumor?

Answer 15

Trigeminal neuritis is acute and bilateral
Trigeminal nerve sheath tumor is unilateral

Question 16

Acute onset with an inability to blink, can feel but simply unable to blink?

Answer 16

Idiopathic facial nerve paralysis

Question 17

What is the condition similar to that of Bell’s Palsy in humans?

Answer 17

Idiopathic facial nerve paralysis

Question 18

Is idiopathic facial nerve paralysis normally bilateral or unilateral?

Answer 18

Unilateral (can’t blink one side)

Question 19

What is another cause of dysfunction for CNVII?

Answer 19

Hypothyroidism

Question 20

What gives rise to the central nervous system?

Answer 20

The ectoderm

Question 21

Where does the neural tube (ectoderm) begin closing?

Answer 21

At the center then zippers outwards in both directions