Cranial Nerve Examination

Question 1

What is cranial nerve 1

Answer 1

Olfactory nerve

Question 2

What is cranial nerve 2

Answer 2

Optic nerve

Question 3

What is cranial nerve 3

Answer 3

Oculomotor nerve

Question 4

What is cranial nerve 4

Answer 4

Trochlear nerve

Question 5

What is cranial nerve 5

Answer 5

Trigeminal nerve

Question 6

What is cranial nerve 6

Answer 6

Abducens nerve

Question 7

What is cranial nerve 7

Answer 7

Facial nerve

Question 8

What is cranial nerve 8

Answer 8

Vestibulocochlear nerve

Question 9

What is cranial nerve 9

Answer 9

Glossopharyngeal nerve

Question 10

What is cranial nerve 10

Answer 10

Vagus nerve

Question 11

What is cranial nerve 11

Answer 11

Accessory nerve

Question 12

What is cranial nerve 12

Answer 12

Hypoglossal nerve

Question 13

What is role of the olfactory nerve

Answer 13

Sense of smell

Question 14

What is the role of cranial nerve 1

Answer 14

Sense of smell

Question 15

What is the role of the optic nerve

Answer 15

Vision - pupillary light reflex

Question 16

What is the role of cranial nerve 2

Answer 16

Vision - pupillary light reflex

Question 17

What is the role of oculomotor nerve

Answer 17

Extraocular muscles and pupillary constrictor muscles, pupillary light reflex

Levator palpebrae superiosis, inferior oblique, and superior, medial and inferior recti

Question 18

What is the role of cranial nerve 3

Answer 18

Extraocular muscles and pupillary constrictor muscles, pupillary light reflex

Levator palpebrae superiosis, inferior oblique, and superior, medial and inferior recti

Question 19

What does cranial nerve 3 palsy cause

Answer 19

Down and out eye

Question 20

What is the role of the trochlear nerve

Answer 20

Extraocular superior oblique muscles - assist in depressing and abducting the eye

Question 21

What is the role of cranial nerve 4

Answer 21

Extraocular superior oblique muscles - assist in depressing and abducting the eye

Question 22

What is the role of the trigeminal nerve

Answer 22

3 divisions

V1 ophthalmic - sensory above the eyelid

V2 maxillary - sensory lower eye lid to upper lip

V3 mandibular - sensory to below upper lip, muscle of mastication

Question 23

What is the role of cranial nerve 5

Answer 23

3 divisions

V1 ophthalmic - sensory above the eyelid

V2 maxillary - sensory lower eye lid to upper lip

V3 mandibular - sensory to below upper lip, muscle of mastication

Question 24

What is the role of the abducens nerve

Answer 24

Innervates the lateral rectus muscle - eye abduction

Question 25

What is the role of cranial nerve 6

Answer 25

Innervates the lateral rectus muscle - eye abduction

Question 26

What is the role of the facial nerve

Answer 26

Somatic - skin behind the ear Taste of anterior 2/3 of the tongue Parasympathetic to the lacrimal, sublingual and submandibular glands Muscle of facial expression

Question 27

What is the role of cranial nerve 7

Answer 27

Somatic - skin behind the ear Taste of anterior 2/3 of the tongue Parasympathetic to the lacrimal, sublingual and submandibular glands Muscle of facial expression

Question 28

What is the role of the vestibulocochlear nerve

Answer 28

Special somatic afferent fibres for hearing and balance

Question 29

What is the role of cranial nerve 8

Answer 29

Special somatic afferent fibres for hearing and balance

Question 30

What is the role of glossopharyngeal nerve

Answer 30

Sensation from the posterior 1/3 of the tongue, pharynx Taste to posterior 1/3 of tongue Sensation from the carotid body and carotid sinus (baroreception and chemoreception) Parasympathetic to parotid glands Motor to stylopharyngeus

Question 31

What is the role of cranial nerve 9

Answer 31

Sensation from the posterior 1/3 of the tongue, pharynx Taste to posterior 1/3 of tongue Sensation from the carotid body and carotid sinus (baroreception and chemoreception) Parasympathetic to parotid glands Motor to stylopharyngeus

Question 32

What is the role of the vagus nerve

Answer 32

Somatic to skin around ear Taste and sensation to epiglottis Sensory information to body viscera Parasympathetic to glands of GI tract Motor innervation to soft palate, pharnyx and larynx

Question 33

What is the role of cranial nerve 10

Answer 33

Somatic to skin around ear Taste and sensation to epiglottis Sensory information to body viscera Parasympathetic to glands of GI tract Motor innervation to soft palate, pharnyx and larynx

Question 34

What is the role of accessory nerve

Answer 34

Special visceral efferent fibres to the trapezius and sternocleidomastoid

Question 35

What is the role of cranial nerve 11

Answer 35

Special visceral efferent fibres to the trapezius and sternocleidomastoid

Question 36

What is the role of hypoglossal nerve

Answer 36

Somatic efferent fibres for controlling tongue muscles