Cranial Nerves

Question 1

Name the 5th cranial nerve.

Answer 1

Trigeminal nerve

Question 2

Name the 1st cranial nerve.

Answer 2

Olfactory nerve

Question 3

Name the 8th cranial nerve.

Answer 3

Vestibulocochlear nerve

Question 4

Name the 10th cranial nerve.

Answer 4

Vagus nerve

Question 5

Name the 2nd cranial nerve.

Answer 5

Optic nerve

Question 6

Name the 7th cranial nerve.

Answer 6

Facial nerve

Question 7

Name the 9th cranial nerve.

Answer 7

Glossopharyngeal nerve

Question 8

Name the 3rd cranial nerve.

Answer 8

Oculomotor nerve

Question 9

Name the 4th cranial nerve.

Answer 9

Trochlear nerve

Question 10

Name the 6th cranial nerve.

Answer 10

Abducents nerve

Question 11

Name the 12th cranial nerve.

Answer 11

Hypoglossal nerve

Question 12

Name the 11th cranial nerve.

Answer 12

Spinal accessory nerve.

Question 13

What 3 motor nerves are grouped together to provide eye muscle movement?

Answer 13

3,4&6.

Oculomotor, Trochlear and abducent.

Question 14

What nerve is the branchial motor a component of?

Answer 14

The vagus nerve. CN: 10

Question 15

What are special sensations?

Answer 15

Taste, smell and vision.

Question 16

What kind of nerve is the olfactory nerve? (sensory, motor, special)

Answer 16

Special sensory for smell.

Question 17

What are the only nerves that can regenerate?

Answer 17

Olfactory nerves.

Question 18

What is anosmia?

Answer 18

Can’t smell

Question 19

What kind of nerve is the optic nerve?

Answer 19

Special sensory for vision.

Question 20

What is an optic chiasm?

Answer 20

Where the optic nerves partially cross over.

Question 21

What feature of the optic nerve is important in detecting brain tumours?

Answer 21

Optic nerve is a direct extension from the brain, a bulging optic nerve could indicate a brain tumour.

Question 22

What is multiple sclerosis? What causes this?

Answer 22

Degeneration of the nerve fibres in the eye. Loss of the myelin surrounding the nerve axons.

Question 23

The oculomotor nerve receives some parasympathetic nerve innervation that controls..?

Answer 23

Sphincter papillae: Constricts the eye.

Cilliary muscle: Near and far adjustment of sight.

Question 24

If a patient is having trouble walking down the stairs they could be having trouble with cranial nerve..?

Answer 24

4: Trochlear nerve.

Usually affected alongside CN: 3 Oculomotor.

Question 25

Name the 3 branches of the trigeminal nerve.

Answer 25

Ophthalmic, maxillary and mandibular.

Question 26

What group of muscles does the trigeminal nerve supply?

Answer 26

The muscles of mastication.

Question 27

Where does the abducent nerve arise from?

Answer 27

The pons.

Question 28

Name the pneumonic for eye muscle movement. Explain.

Answer 28

LR6 S04 Lateral rectus is supplied by CN:6 and the superior oblique is supplied by CN: 4. All the other muscles are suppled by CN:3.

Question 29

What cranial nerve supplies the the smallest muscle in the body? Whats the muscle called?

Answer 29

CN:7 the facial nerve. | Stapedius muscle.

Question 30

What is the clinical test for the facial nerve?

Answer 30

Raise eyebrows, scrunch eyes and puff the cheeks.

Question 31

What does the facial nerve supply the creates special sensory sensation?

Answer 31

The anterior 2/3 of the tongue.

Question 32

What does the facial nerve supply parasympathetic innervation to?

Answer 32

The submandibular, sublingual, lacrimal and nasal/palatal glands.

Question 33

Where does the facial nerve run through yet not supply?

Answer 33

The parotid gland.

Question 34

What nerve supplies parasympathetic innervation to the parotid glands?

Answer 34

CN:9 The glossopharyngeal nerve.

Question 35

What nerve supples special sensation to the posterior 1/3 of the tongue?

Answer 35

CN:9 The glossopharyngeal nerve.

Question 36

What does the vagus nerve supply parasympathetic innervation to?

Answer 36

The heart, GI tract, the lungs.

Question 37

What does the vagus nerve supply special sensory sensation to?

Answer 37

The pallet and epiglottis.

Question 38

What is the clinical test for the vagus nerve?

Answer 38

Say 'aaaah'

Question 39

If there are problems with the vagus nerve what will the patient present with?

Answer 39

Inability to swallow/speak. Lack of gag reflex.

Question 40

What does the hypoglossal nerve supply?

Answer 40

Somatic motor innervation to the muscles of the tongue.

Question 41

What muscle is an exception to the hypoglossal nerve supply?

Answer 41

The palatoglossus. (Glossopharyngeal nerve)

Question 42

What is the difference between the glossopharyngeal and the hypoglossal nerve?

Answer 42

The glossopharyngeal is a special sensory nerve to the tongue (Posterior 1/3). The hypoglossal is a somatic motor nerve to the tongue.