Cranial Nerves

Olfactory

-Olfaction-also known as smell

(carries information from the nose.)

-Sensory

Optic

-Vision

(Carries visual information from eyes.)

-Sensory

Oculomotor

-Pupil Dilation

(eye movement, pupil constriction, lens shape)

-Motor

Trochlear

Innervates the Superior Oblique-Motor

Trigeminal

-Sensation in the skin on the face and head, mastication (sensory information from face, mouth; motor signals for chewing)

-Both Sensory and Motor

Abducens

(eye movement by innervating the lateral rectus)

-Motor

Facial

-Facial Movement, taste, saliva, and tear secretion

(sensory for taste; efferent signals for tear and salivary glands, facial expression)

-Both Sensory and Motor

Vestibulocochlear

-Balance, posture, and hearing (hearing and equilibrium)

-Sensory

Glossopharyngeal

-Swallowing, taste, and saliva secretion

(sensory from oral cavity, baro- and chemoreceptors in blood vessels; efferent for swallowing, parotid salivary gland secretion)

-Both Sensory and Motor

Vagus

-Taste,Visceral sensation

(sensory and efferents to many internal organs, muscles, and glands)

-Both Sensory and Motor

Accessory

-Movement of the head and shoulders

(muscles in neck and shoulder)

-Motor

Hypoglossal

-Movement of the tongue

(tongue muscles)

-Motor

Rods

Photoreceptor used for low light vision

Cones

Photoreceptors used for color

Vestibular Nerve

Relays equilibrium information to the brain

Cochlear nerve

Relays sense of hearing to the brain

Afferent

Sensory

Efferent

Motor

Sense of taste

Sense from both facial and glossopharyngeal