Cranial Nerves

Type: Sensory (S)

• CN I: Olfactory

  • Function: Smell

  • Location: Cribriform plate

Type: Sensory (S)

• CN II: Optic

  • Function: Sight

  • Location: Optic canal

Type: Motor (M)

• CN III: Oculomotor

  • Function: General eye movement, superior/inferior eye movement

  • Location: Superior orbital fissure

Type: Motor (M)

• CN IV: Trochlear

  • Function: Eye movement (medial/lateral)

  • Location: Superior orbital fissure

Type: Both (B)

• CN V: Trigeminal

  • Subdivisions:

    • CN V1: Ophthalmic

      • Location: Superior orbital fissure

    • CN V2: Maxillary

      • Location: Foramen rotundum

    • CN V3: Mandibular

      • Location: Foramen ovale

Type: Motor (M)

• CN VI: Abducens

  • Function: Medial/lateral eye movement

  • Location: Superior orbital fissure

Type: Both (B)

• CN VII: Facial

  • Function: Facial movement, balance/equilibrium

  • Location: Internal acoustic meatus

Type: Sensory (S)

• CN VIII: Vestibulocochlear

  • Function: Balance/equilibrium

  • Location: Internal acoustic meatus

Type: Both (B)

• CN IX: Glossopharyngeal

  • Function: Gag reflex

  • Location: Jugular foramen

Type: Both (B)

• CN X: Vagus

  • Function: Diaphragm control

  • Location: Jugular foramen

Type: Motor (M)

• CN XI: Accessory

  • Function: Elevation/depression of shoulders

  • Location: Jugular foramen

Type: Motor (M)

• CN XII: Hypoglossal

  • Function: Tongue movement

  • Location: Hypoglossal canal