Cranial Nerves

Question 1

which foramen does the olfactory nerve pass through?

Answer 1

cribiform

Question 2

which foramen does the optic nerve pass through?

Answer 2

optic canal

Question 3

which foramen does the oculomotor nerve pass through?

Answer 3

superior orbital fissure

Question 4

which foramen does the trochlear nerve pass through?

Answer 4

superior orbital fissure

Question 5

which foramen does the opthalamic V1 branch pass through?

Answer 5

superior orbital fissure

Question 6

which foramen does the V2 maxillary branch pass through?

Answer 6

foramen rotundum

Question 7

which foramen does the V3 mandibular branch pass through?

Answer 7

foramen ovale

Question 8

which foramen does the abducens nerve pass through?

Answer 8

superior orbital fissure

Question 9

which foramen does the facial nerve pass through?

Answer 9

internal acoustic meatus

Question 10

which foramen does the vestibulocochlear nerve pass through?

Answer 10

internal acoustic meatus

Question 11

which foramen does the glossopharyngeal nerve pass through?

Answer 11

jugular foramen

Question 12

which foramen does the vagus nerve pass through?

Answer 12

jugular foramen

Question 13

which foramen does the accessory nerve pass through?

Answer 13

jugular foramen

Question 14

which foramen does the hypoglossal nerve pass through?

Answer 14

hypoglossal canal

Question 15

label the nerves

Answer 15

Question 16

what type of fibres are present in cranial nerve I?

Answer 16

special sensory

Question 17

what plate of bone do the branches of CN I enter into the anterior cranial fossa?

Answer 17

ethmoid bone

Question 18

Answer 18

Question 19

what type of fibres are present in cranial nerve II?

Answer 19

special sensory

Question 20

Answer 20

Question 21

which type of fibres are present in CN III, IV & VI?

Answer 21

motor
CN III > motor and parasympathetic

Question 22

Answer 22

Question 23

Answer 23

Question 24

what type of fibres are present in CN V1?

Answer 24

general sensory

Question 25

what type of nerve fibres are present in CN V2?

Answer 25

general sensory

Question 26

what type of nerve fibres are present in CN V3?

Answer 26

- general sensory (anterior 2/3 of tongue) - motor (mastication)

Question 27

Answer 27

Question 28

which type of fibres are present in CN VII?

Answer 28

- general sensory - special sensory (ant. 2/3 of tongue) - motor (facial expression m.) - parasympathetic > sublingual and submandibular salivary glands

Question 29

which type of fibres are present in CN VIII?

Answer 29

special sensory

Question 30

which type of fibres are present in CN IX?

Answer 30

- general sensory - special sensory (post 1/3 of tongue) - motor (stylopharyngeus) - parasympathetic > parotid gland

Question 31

Answer 31

Question 32

which type of fibres are present in cranial nerve X?

Answer 32

- general sensory - special sensory (root of tongue and epiglottis) - motor (GI tract, muscles of pharynx and larynx, palatoglossus, soft palate muscles) - parasympathetic

Question 33

what plexus does cranial nerve X form part of and what does it innervate?

Answer 33

oesophageal plexus - innervates the smooth muscle of oesophagus

Question 34

name two branches of CN X that innervate the muscles of the larynx

Answer 34

left recurrent laryngeal nerve external branch of superior laryngeal nerve

Question 35

which type of fibres are present in cranial nerve XI?

Answer 35

motor (trapezius and SCM)

Question 36

what type of fibres are present in CN XII?

Answer 36

- motor > intrinsic and extrinsic tongue muscles except for palatoglossus

Question 37

which of the cranial nerves have a parasympathetic component?

Answer 37

oculomotor facial glossopharyngeal vagus so 3, 7, 9 and 10

Question 38

which cranial nerves are attached directly to the brain?

Answer 38

olfactory and optic

Question 39

which cranial nerves are attached directly to midbrain?

Answer 39

III and IV

Question 40

which is the only cranial nerve to arise from the posterior aspect of the brain?

Answer 40

trochlear IV

Question 41

which cranial nerves are attached directly to the medulla?

Answer 41

IX, X, XI, XII

Question 42

which cranial nerve(s) are attached directly to the pons?

Answer 42

trigeminal V

Question 43

which cranial nerves are attached directly to the pontomedullary junction?

Answer 43

VI, VII, VIII

Question 44

which cranail nerve can be tested by the pupillary light reflex?

Answer 44

oculomotor nerve CN III

Question 45

which cranial nerve can be tested by touch over the surface of the cheek?

Answer 45

trigeminal nerve CN V

Question 46

what cranial nerve would you be testing if you asked a patient to stick their tongue out?

Answer 46

hypoglossal CN XII