Cranial Nerves

Question 1

CN1

Answer 1

Olfactory

Nasal cavity

Question 2

CN II

Answer 2

Optic

eye

Question 3

CN III

Answer 3

Oculomotor (see chart) part of III, IV and VI

Question 4

CN IV

Answer 4

Trochlear
Superior Oblique Muscle
III, IV and VI

Question 5

CN V ( try to recall all sensory and motor of CN V ) when answering

Answer 5

Trigeminal

Sensory - face, sinus, teeth, orbit, and oral cavities, dura mater

Motor - mm of mastication: tensor timpani,
tensor timpani, tensor veli, palatini, mylohyoid, anterior belly of digastric.

Question 6

CN VI

Answer 6

Abducent
Lateral rectus mm
part of CN III, IV and VI

Question 7

CN VII

Answer 7

Facial

MM of face, stapedius, posterior belly of digastric, stylohyoid, occipitals, auricularis mm

Question 8

CN VIII

Answer 8

Vestibulocochlear

Cochlear and Vestibular

Question 9

CN IX

Answer 9

Glossopharyngeal

Taste - posterior 1/3 of tongue
Sensory - tonsil, pharynx, middle ear,
Motor - stylopharyngeus, parotid gland

Question 10

CN X

Answer 10

Vagus

Motor - heart, lungs, palate, pharynx, larynx, trachea, bronchi, GI tract

Sensory - heart, lungs, trachea, bronchi, larynx, pharynx, GI tract, external ear

Question 11

CN XI

Answer 11

Accessory

SCM and Trapezius

Question 12

CN XII

Answer 12

Hypoglossal
tongue mm
strap mm (C1,2,3 fibres)