Cranial Nerves

Question 1

CN1

Answer 1

Olfactory

Question 2

CN2

Answer 2

Optic

Question 3

CN3

Answer 3

Oculomotor

Question 4

CN4

Answer 4

Trochlear

Question 5

CN5

Answer 5

Trigeminal

Question 6

CN6

Answer 6

Abducens

Question 7

CN7

Answer 7

Facial

Question 8

CN8

Answer 8

Vestibulocochlear

Question 9

CN9

Answer 9

Glossopharyngeal

Question 10

CN10

Answer 10

Vagus

Question 11

CN11

Answer 11

Accessory

Question 12

CN12

Answer 12

Hypoglossal

Question 13

which nerves are entirely sensory?

Answer 13

Olfactory (I)
Optic (II)
Vestibulocochlear (8)

Question 14

which nerves are entirely motor?

Answer 14

Oculomotor (3)
Trochlear (4)
Abducens (6)
Accessory 11
Hypoglossal 12

Question 15

which nerves are mixed?

Answer 15

Trigeminal 5
Facial 7
Glossopharyngeal 9
Vagus 10

Question 16

which nerves have parasympathetic components?

Answer 16

Oculomotor 3
Facial 7
Glossopharyngeal 9
Vagus 10

Question 17

which nerves contain taste fibers?

Answer 17

Facial 7
Glossopharyngeal 9
Vagus 10

Question 18

what opening in the skull does CN 1 come out of?

Answer 18

openings in the cribiform plate of the ethmoid bone

Question 19

what do the motor and parasympathetic components of the oculomotor nerve do?

Answer 19

motor- move the muscles of the eye

parasympathetic- constrict the pupil and accommodate eye

Question 20

what opening does the trochlear nerve exit?

Answer 20

superior orbital fissure

Question 21

what is the motor function of the trochlear nerve?

Answer 21

move the eye downward and laterally

Question 22

what are the 3 divisions of the trigeminal nerve?

Answer 22

opthalmic division
maxillary division
mandibular division

Question 23

where does the opthalmic division of the trigeminal nerve supply?

Answer 23

cornea
skin of forehead, scalp, eyelids, nose
mucous membrane of paranasal sinuses and nasal cavity

Question 24

where does the maxillary division of the trigeminal nerve supply?

Answer 24

skin of face over maxilla and upper teeth
teeth of upper jaw
mucous membrane of nose
maxillary air sinus

Question 25

what does the mandibular division of the trigeminal nerve supply?

Answer 25

skin of the cheek, mandible, side of head
teeth of lower jaw and temporomandibular joint
mucous membrane of mouth and anterior 2/3 of tongue

Question 26

what motor innervation does the mandibular branch of trigeminal supply?

Answer 26

muscles of mastication

Question 27

what are all the components of the facial nerve?

Answer 27

motor, sensory, parasympathetic, and taste

Question 28

what does the vestibular nerve do?

Answer 28

part of vestibulocochlear nerve; position and movement of the head

Question 29

what does the cochlear nerve do?

Answer 29

part of the vestibulocochlear nerve; hearing

Question 30

where do the sensory fibers from the glossopharyngeal nerve come from?

Answer 30

carotid sinus

Question 31

what does the glossopharyngeal nerve parasympathetically innervate?

Answer 31

parotid gland

Question 32

what does the accessory nerve innervate?

Answer 32

sternocleidomastoid + trapezius

Question 33

what muscle of the tongue does CN 12 NOT innervate?

Answer 33

palatoglossus muscle