Cranial Nerves - Function

Question 1

Cranial Nerve I - Olfactory

Answer 1

Function: Sense of smell

Modality: Sensory

Foramen exit: Cribriform plate of the ethmoid bone.

Question 2

Cranial Nerve II - Optic

Answer 2

Function: Vision

Modality: Sensory

Foramen exit: Optic canal

Question 3

Cranial Nerve III - Oculomotor

Answer 3

Function: Movement of eyelids and eyeballs

Modality: Motor

Foramen exit: Superior Orbital Fissure

Question 4

Cranial Nerve IV - Trochlear

Answer 4

Function: Movement of eyes, up and down, back and forth

Modality: Motor

Foramen exit: Superior Orbital Fissure

Question 5

Cranial Nerve V - Trigeminal

Answer 5

Functions:
V1 - Ophthalmic nerve (upper of face)
V2 - Maxillary nerve (middle of face)
V3 - Mandibular nerve (lower of face)

Modality: Both sensory and motor

Foramen exit:
V1 Superior Orbital Fissure
V2 Foramen Rotundum
V3 Foramen Ovale, Mandibular Foramen

Question 6

Cranial Nerve VI - Abducens

Answer 6

Function: Lateral movement of eyes

Modality: Motor

Foramen exit: Superior Orbital Fissure

Question 7

Cranial Nerve VII - Facial

Answer 7

Function: Facial expression, tears and taste

Modality: Both sensory and motor

Foramen exit: Internal Acoustic Meatus

Question 8

Cranial Nerve VIII - Vestibulocochlear

Answer 8

Function: Hearing and equilibrium/balance

Modality: Sensory

Foramen exit: Internal Acoustic Meatus

Question 9

Cranial Nerve IX - Glossopharyngeal

Answer 9

Function: Taste, swallowing and salivary gland

Modality: Both sensory and motor

Foramen exit: Jugular foramen

Question 10

Cranial Nerve X - Vagus

Answer 10

Function: Digestive and respiratory organs

Modality: Both sensory and motor

Foramen exit: Jugular foramen

Question 11

Cranial Nerve XI - Accessory

Answer 11

Function: Movement of neck and shoulder

Modality: Motor

Foramen exit: Jugular foramen

Question 12

Cranial Nerve XII - Hypoglossal

Answer 12

Function: Ability to move tongue, swallow and speech

Modality: Motor

Foramen exit: Hypoglossal Canal