Cranial Nerves

Question 1

CN1 Function

Answer 1

Olfactory nerve, smell

Question 2

CN1 Type

Answer 2

Sensory; smell

Question 3

CN 2 Name + Function

Answer 3

Optic nerve, sight

Question 4

CN 2 type

Answer 4

Sensory; sight

Question 5

CN3 Name + Function

Answer 5

Oculomotor nerve, eye movement

Question 6

CN3 Type

Answer 6

Motor + Parasympathetic

Question 7

CN3 Muscles

Answer 7

Superior rectus
Inferior rectus
Medial rectus
Inferior oblique

Question 8

CN3 Parasympathetic Function

Answer 8

Pupil constriction via ciliary muscles (chill out, lights out)

Question 9

CN4 Name + Function

Answer 9

Trochlear nerve, eye movement down and medially

Question 10

CN4 Type

Answer 10

Motor

Question 11

CN4 Muscles

Answer 11

Superior oblique

Question 12

CN5 Name + Function

Answer 12

Trigeminal nerve, facial sensation and mastication

Question 13

CN5 Type

Answer 13

Motor and Sensory

Question 14

CN5 Sensory Functions

Answer 14

three branches;
Ophthalmic (V1): forehead to nose
Maxillary (V2): midface to upper teeth
Mandibular (V3): temporals to cheek and to lower jaw

Just senses stuff, no tasting or anything special

Question 15

CN5 Motor Functions

Answer 15

Chewing

Question 16

CN6 Name and Function

Answer 16

Abducens nerve, eye movement away from nose (abducting)

Question 17

CN6 Type

Answer 17

Motor

Question 18

CN6 Muscle

Answer 18

Lateral rectus muscle to abduct the eye

Works with CN3 (oculomotor) and CN4 (trochlear) for smooth eye movement

Question 19

CN7 Name and Function

Answer 19

Facial nerves, taste buds, tears, saliva, smiling

Question 20

CN7 Type

Answer 20

Sensory and Motor + Parasympathetic

Question 21

CN7 Sensory Function

Answer 21

taste sensation in front two thirds of tongue

Question 22

CN7 Motor Function

Answer 22

facial muscles (smiling)

Question 23

CN7 Parasympathetic Function

Answer 23

stimulates lacrimal gland for tears, and stimulates salivary glands

Question 24

CN8 Name and Function

Answer 24

Vestibulocochlear nerve, hearing and balance

Question 25

CN8 Type

Answer 25

Sensory

Question 26

CN8 Functions

Answer 26

Cochlear: auditory conversion to brain signals Vestibular: balance and sends position signal to brain

Question 27

CN9 Name and Function

Answer 27

Glossopharyngeal nerve, taste and swallowing

Question 28

CN9 Type

Answer 28

Sensory and Motor + Parasympathetic

Question 29

CN9 Sensory Functions

Answer 29

Taste and general sensation of posterior 1/3 of tongue Monitor BP and O2 via carotid body

Question 30

CN9 Motor Functions

Answer 30

Swallowing via the stylopharyngeus muscle

Question 31

CN9 Parasympathetic Function

Answer 31

More saliva via parotid glands

Question 32

CN10 Name and Function

Answer 32

Vagus nerve, heart rate, digestion, swallowing, speech

Question 33

CN10 Type

Answer 33

Sensory and Motor + Parasympathetic

Question 34

CN10 Sensory Functions

Answer 34

Visceral sensory inputs from lungs, heart, digestive organs

Question 35

CN10 Motor Functions

Answer 35

Controls most of the pharynx and larynx for swallowing and speech (except for stylopharyngeus which CN9 controls) Works with CN9 for gag reflex

Question 36

CN10 Parasympathetic Function

Answer 36

Regulates heart rate, breathing, and digestion Innervates the smooth muscles of the resp. tract, heart, and most of the digestive system (rest and digest)

Question 37

CN11 Name and Function

Answer 37

Accessory nerves, shoulder shrugging and head turning

Question 38

CN11 Type

Answer 38

Motor

Question 39

CN11 Muscles

Answer 39

Sternocleidomastoid: turns the head to opposite side Trapezius: elevate the shoulders and helps with neck movement

Question 40

CN12 Name and Functions

Answer 40

Hypoglossal nerves, tongue movement (flatten, curl, elongate)

Question 41

CN12 Type

Answer 41

Motor