PSIO201 Lab 4.1 - Cranial Nerves

Cranial Nerve I

Olfactory

Cranial Nerve II

Optic

Cranial Nerve III

Oculomotor

Cranial Nerve IV

Trochlear

Cranial Nerve V

Trigeminal

Cranial Nerve VI

Abducens

Cranial Nerve VII

Facial

Cranial Nerve VIII

Vestibulocochlear

Cranial Nerve IX

Glossopharyngeal

Cranial Nerve X

Vagus

Cranial Nerve XI

Accessory

Cranial Nerve XII

Hypoglossal

Sensory cranial nerves

• Olfactory I

• Optic II

• Vestibulocochlear VIII

Motor cranial nerves

• Oculomotor III

• Trochlear IV

• Abducens VI

• Accessory XI

• Hypoglossal XII

Both/mixed cranial nerves

• Trigeminal V

• Facial VII

• Glossopharyngeal IX

• Vagus X

Olfactory I (S)

From nose

Optic II (S)

From eyes

Oculomotor III (M)

To most rectus and inferior oblique muscles for eye movement

Trochlear IV (M)

To superior oblique muscles for eye movement

Trigeminal V (B)

• SI from and MI to the face

• MI for chewing

Abducens VI (M)

To lateral rectus muscle for eye movement

Facial VII (B)

• SI from anterior tongue

• MI to the face

• Innervates lacrimal, salivary, and other glands

Vestibulocochlear VIII (S)

From ear for hearing and equilibrium

Glossopharyngeal IX (B)

• SI from posterior tongue

• MI to the tongue and throat

Vagus X (B)

• SI from abdomen, thorax, neck, and root of tongue

• MI to the heart, GI organs, spleen, and kidneys

Accessory XI (M)

For neck and shoulder movement, and swallowing

Hypoglossal XII (M)

To the tongue for speech, food manipulation, and swallowing