Cranial Nerves
Abducens
(eye movement by innervating the lateral rectus) -Motor
Vestibulocochlear
-Balance, posture, and hearing (hearing and equilibrium) -Sensory
Facial
-Facial Movement, taste, saliva, and tear secretion (sensory for taste; efferent signals for tear and salivary glands, facial expression) -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
Olfactory
-Olfaction-also known as smell (carries information from the nose.) -Sensory
Oculomotor
-Pupil Dilation (eye movement, pupil constriction, lens shape) -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
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
Optic
-Vision (Carries visual information from eyes.) -Sensory
Trochlear
Innervates the Superior Oblique-Motor
Efferent
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
Sense of taste
Sense from both facial and glossopharyngeal
Afferent
Sensory