Brain Stem

Question 1

CN I

Answer 1

Olfactory Nerve
Smell
Sensory
Midbrain

Question 2

Brainstem Anatomy

Answer 2

Midbrain
Pons
Medulla
Contains nuclei for CNs

Question 3

CN II

Answer 3

Optic Nerve
Vision
Sensory
Midbrain

Question 4

CN III

Answer 4

Oculomotor
Eye movement, pupil constriction
Motor
Midbrain

Question 5

CN IV

Answer 5

Trochlear
Eye movements
Motor
Midbrain

Question 6

CN V

Answer 6

Trigeminal Nerve
V1: Ophthalmic - (S) to upper face, Pons
V2: Maxillary - (S) to middle face, Pons
V3: Mandibular - (B) (S) to lower face, (M) to mastication and middle ear (stapes), Pons

Question 7

CN VII

Answer 7

Facial Nerve
Muscles of facial expressions, taste ton ANT 2/3, lacrimation/salivation, sensation of tongue and external auditory meatus
Both
Pons

Question 7

CN VIII

Answer 7

Vestibulcochlear Nerve
Auditory and vestibular sensory info from the inner ear
Sensory
Inner Ear

Question 8

CN VI

Answer 8

Abducens Nerve
Eye movement
Motor
Pons

Question 9

CN X

Answer 9

Vagus Nerve
MOTOR:
Muscles of pharynx and upper epiglottis for gag reflex/swallowing
Controls heart,lung, and digestive system
SENSORY:
taste from epiglottis and pharynx
sensation of baroreceptors and chemoreceptors in aortic arch
Sense of touch, pain, temp in pharynx, larynx, meninges, and external auditory meatus
Medulla

Question 9

CN IX

Answer 9

Glossopharyngeal Nerve
Muscles of pharynx for talking/swallowing and salivation from the parotid gland
Taste from Posterior 1/3 of tongue and sensation of pain, temp, touch to same 1/3
Sensation of baroreceptors and chemoreceptors in carotid body
Both
Medulla and Pons

Question 10

CN XII

Answer 10

Hypoglossal Nerve
Muscles of the tongue besides palatoglossus
Motor
Medulla

Question 10

CN XI

Answer 10

Spinal Accessory Nerve
Muscles of SCM and Upper Traps
Motor