Cranial nerves

Week 4

CN I name

Olfactory

CN II name

Optic

CN III name

Oculomotor

CN IV name

Trochlear

CN V_1,2,3 name

Trigeminal

CN VI name

Abducens

CN VII name

Facial

CN VIII name

Vestibulocochlear

CN IX name

Glossopharyngeal

CN X name

Vagus

CN XI name

Spinal accessory

CN XII name

Hypoglossal

CN I function

Olfaction (smell)

CN II function

Vision processing

CN III function

Eye movement for the majority of eye including movement up/down/inward (medial), pupil constriction, focusing the lens, also. innervates eyelid

CN IV function

Innervates superior oblique muscle which moves eye down and laterally.

CN V_1,2,3 function

Innervates the muscles of mastication, the anterior digastric belly, and the mylohyoid. Responsible for touch, temperature, and pain sensation on the face.

Muscles of mastication

Masseter, temporalis, medial pterygoid, and lateral pterygoid

CN V₁ name

Ophthalmic

CN V₂ name

Maxillary

CN V₃ name

Mandibular

CN VI function

Innervates lateral rectus (responsible for eye movement)

CN VII function

facial expression, gustation (taste), innervates stylohyoid and posterior digastric belly

CN VIII function

Audition (hearing) and equilibrium

CN IX function

Gustation, sensation from pharynx, swallowing

CN X function

Majority of visceral sensory information, general sensory information from ears and body parts responsible for speech, controls most of swallowing and all speech muscles. Controls cardiac muscle, most visceral organs, and glands/smooth muscle in thorax

CN XI function

Movement of head and shoulders

CN XII function

Tongue movement (swallowing/speech)

All motor nerves

CN III, CN IV, CN VI, CN XI, CN XII

All sensory nerves

CN I, CN II, CN VIII

All nerves that are both motor and sensory

CN V, CN VII, CN IX, CN X