Cranial Nerves

Question 0

Name CN2

Answer 0

Optic nerve

Question 1

Name CN1

Answer 1

Olfactory nerve

Question 2

Name CN3

Answer 2

Oculomotor nerve

Question 3

Name CN4

Answer 3

Trochlear nerve

Question 4

Name CN5

Answer 4

Trigeminal nerve

Question 5

Name CN6

Answer 5

Abducens nerve

Question 6

Name CN7

Answer 6

Facial nerve

Question 7

Name CN8

Answer 7

Vestibulocochlear nerve

Question 8

Name CN9

Answer 8

Glossopharyngeal nerve

Question 9

Name CN10

Answer 9

Vagus nerve

Question 10

Name CN11

Answer 10

Accessory nerve

Question 11

Name CN12

Answer 11

Hypoglossal nerve

Question 12

Describe the olfactory nerve.

Answer 12

Atypical nerve

Sensory nerve

Question 13

Describe the optic nerve

Answer 13

Atypical nerve

Sensory nerve

Question 14

What do you do to assess optic nerve function in visual system exam?

Answer 14

Test visual acuity using a snellen’s chart.
Test for colour vision.
Do a fundoscopy to view optic nerve

Question 15

Describe the oculomotor nerve.

Answer 15

Mixed modality nerve. Has both somatic and autonomic fibres

Question 16

Which muscles does CN3 supply?

Answer 16

Superior rectus
Inferior rectus
Medial rectus
Inferior oblique
Levator palpabrae superioris

Question 17

How do you assess CN3 function on a visual system exam?

Answer 17

Measure visual fields using a H movement

Question 18

Describe the trochlear nerve.

Answer 18

Somatic motor nerve.

Emerges from dorsal aspect of midbrain.

Question 19

What does the trochlear nerve innervate? What symptoms are present of there is damage to the nerve?

Answer 19

Superior oblique.

If damaged will have double vision on descending stairs.

Question 20

Describe the abducens nerve.

Answer 20

Somatic motor nerve.

Longest intracranial course.

Question 21

What does the abducens nerve innervate? What symptoms are present of there is damage to the nerve?

Answer 21

Innervates the lateral rectus muscle.

If damaged the patient is unable to look outwards.