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Olfactory Nerve (I)
(Sensory)

Functions: Transmits sense of smell. Ability to smell and identify substances indicates normal function
Optic Nerve (II)
(Sensory)

Functions: Transmits vision info to brain.  Also involved in pupillary reflex (reflex that controls diamter of pupil)
Oculomotor Nerve (III)
(Motor)

Functions: Movement of medial, superior, and inferior rectus and inferior oblique muscles.  Also involved in pupil contraction (damage = little to no movement and pupils remain same size)
Trochlear Nerve (IV)
(Motor)

Functions: Innervates superior oblique muscle of eyes and allows for inferior and lateral movement of eye
Trigeminal Nerve (V)
(Both - Sensory and Motor)

Functions: Sensory - receives facial sensation
Motor - innervates muscles used in mastication
Abducens Nerve (VI)
(Motor)

Functions: Innervates lateral rectus, which abducts the eye
Facial Nerve (VII)
(Both - Sensory and Motor)

Functions: Sensory - taste
Motor - controls most facial expressions, secretion of tears and saliva
Vestibulocochlear Nerve (VIII)
(Sensory)

Functions: Hearing and equilibrium
Glossopharyngeal Nerve (IX)
(Both - Sensory and Motor)

Functions: Sensory - taste and gag reflex
Motor - controls muscles of pharynx and larynx + autonomic neurons that secrete saliva
Vagus Nerve (X)
(Both - Sensory and Motor)

Functions: Sensory - taste and gag reflex
Motor - 90% of all parasympathetic fibers to body, serving nearly every organ in the thoracic and abdominal cavities
Accessory Nerve (XI)
(Motor)

Functions: Controls trapezius, sternocleidomastoid, and swallowing movements
Hypoglossal Nerve (XII)
(Motor)

Functions: controls tongue movements
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