Cranial Nerves

Question 1

CN I

Answer 1

Olfactory - S

Smell - olfactory epithelium of nasal cavity

Question 2

CN II

Answer 2

Optic - S

Sight - retina (rods and cones)

Question 3

CN III

Answer 3

Oculomotor - M

Eye movement - all eye muscles - sphincter pupillae and ciliary muscles

Question 4

CN IV

Answer 4

Trochlear - M
Eyes downward/outward
Superior Oblique muscles

Question 5

CN V

Answer 5

Trigeminal - B
Skin and mucosae of face and head
Muscles of mastication
Tenors tympani
Veil palatine
Mylohyoid
Anterior Digastric muscle
Facial senses
Proprioception

Question 6

CN VI

Answer 6

Abducens - M

Abduction of the eye - lateral rectus

Question 7

CN VII

Answer 7

Facial - B
Facial expression muscles
Some glands
Anterior 2/3 taste buds
Sense of middle/external ear
Gustation

Question 8

CN VIII

Answer 8

Vestibulocochlear - S
Hair cells in ear
Hearing and balance

Question 9

CN IX

Answer 9

Glossopharyngeal - B
Gustation 
Posterior 1/3 taste buds
Parotid gland
Pharynx 
Middle ear
Stylopharyngeus muscle
External ear

Question 10

CN X

Answer 10

Vagus - B
Smooth muscle
Cardiac Muscle
Glands of thoracic and abdominal organs through transverse colon
Carotid and aortic bodies - parasympathetic
Muscles of soft palate, pharynx, larynx, esophagus
Epiglottis
External ear

Question 11

CN XI

Answer 11

Accessory - M
Shrugs shoulders
SCM/Trapezius

Question 12

CN XII

Answer 12

Hypoglossal - M

Extrinsic and Intrinsic tongue muscles

Question 13

Olfactory Nerve

Answer 13

CN I - S

Question 14

Optic Nerve

Answer 14

CN II - S

Question 15

Oculomotor Nerve

Answer 15

CN III - M

Question 16

Trochlear Nerve

Answer 16

CN IV - M

Question 17

Trigeminal

Answer 17

CN V - Both

Question 18

Abducens

Answer 18

CN VI - M

Question 19

Facial

Answer 19

CN VII - B

Question 20

Vestibulocochlear

Answer 20

CN VIII - S

Question 21

Glossopharyngeal

Answer 21

CN IX - Both

Question 22

Vagus

Answer 22

CN X - Both

Question 23

Accessory

Answer 23

CN XI - M

Question 24

Hypoglossal

Answer 24

XII - Motor

Question 25

Which muscles do cranial nerve III innervate?

Answer 25

``` CN III Oculomotor Inferior Oblique Inferior Rectus Levator palpabrae Superioris Medial Rectus Sphincter Pupillae Superior Rectus ```

Question 26

Which muscles do cranial nerve IV innervate?

Answer 26

CN IV Trochlear | Superior Oblique

Question 27

What muscles do cranial nerve VI innervate?

Answer 27

CN VI Abducens | Lateral Rectus

Question 28

What muscles do cranial nerve V innervate?

Answer 28

``` CN V Trigeminal Pterygoids Temporal Masseter Mylohyoid Digastric (anterior belly) ```

Question 29

What muscles do cranial nerve VII innervate?

Answer 29

CN VII Facial | All facial muscles

Question 30

What muscles does cranial nerve XI innervate?

Answer 30

CN XI Spinal Accessory Sternocleidomastoid Trapezius