Cranial Nerves (Functions)

Functions and Sensory/Motor

CN I Olfactory

Sensory Afferent; Smell

CN II Optic

Sensory Afferent; Sight

CN III Oculomotor

Motor Efferent; eye/eyelid movement and pupil contraction

CN IV Trochlear

Motor Efferent; superior oblique muscle of eye

CN V Trigeminal

Sensory Afferent; face, sinus, teeth

CN VI Abducent

Motor Efferent: Lateral rectus muscle of eye

CN VII Facial

Motor Efferent; submandibular, sublingual, lacrimal glands

Sensory Afferent; Taste to anterior 2/3 of tongue

CN VIII Vestibulocochlear

Sensory Afferent; Orientation, motion, hearing

CN IX Glossopharyngeal

Motor Efferent; Stylopharngeus muscle, parotid gland

Sensory Afferent; Taste posterior 1/3 of tongue, sensation of pharynx, tonsillar sinus, middle ear cavity

CN X Vagus

Motor Efferent; Palate, pharynx, larynx, trachea, bronchial tree, heart

Sensory Afferent; Pharynx, larynx, lungs, heart

CN XI Accessory

Motor Efferent; sternocleidomastoid and trapezius muscles

CN XII Hypoglossal

Motor Efferent; All intrinsic and extrinsic muscles of the tongue