Cranial nerves (peripheral)

Question 1

Olfactory

Answer 1

• sensory

- from nasal cavity

Question 2

optic

Answer 2

• sensory
• from retina of eye
• form “optic chiasma” in cranium
• pass through thalamus and terminate in the occipital cortex

Question 3

oculomotor

Answer 3

• primarily motor

- to most of eye muscles, eyelids, and iris

Question 4

trochlear

Answer 4

• primarily motor

- to superior oblique eye muscles

Question 5

trigeminal

Answer 5

A).mixed
B).to/from jaw and facial muscles
     -opthalmic (s)
     -maxillary (s)
     -mandibular (s+m)

Question 6

abducens

Answer 6

• primarily motor

- to lateral rectus eye muscles

Question 7

facial

Answer 7

• mixed
• to/from face and mouth
• (s) taste on anterior 2/3 of tongue
• (m) muscles of facial expression plus lacrimal and salivary glands

Question 8

acoustic

Answer 8

• sensory
• from inner ear (vestibulocochlear)
• hearing and equilibrium

Question 9

glossopharyngeal

Answer 9

• mixed
• to/from throat and tongue
• (s) taste on posterior 1/3 of tongue and pressure on the throat
• (m) swallowing and salivation

Question 10

vagus

Answer 10

• mixed
• to/from chest and abdomen
• (s) visceral pain
• (m) control of heart and G.I. contraction

Question 11

acessory

Answer 11

• primarily motor

- to muscles of neck and upper back

Question 12

hypoglossal

Answer 12

• primarily motor

- to muscles moving the tongue