Cranial nerves

I - sense of smell

II - are sensory and leads from eyes to brain - vision

III - primarily motor - motor fibers transmit impulses that raise the eyelids, move te eyes, adjust the amount of ight entering th eeyes, and focus the lenses.

IV - primarily motor - motor fibers transmit impulses to muscles that move the eyes.

• V - mixed
• Ophthalmic - sensory fivers transmit impulses from the surface of the eyes, tear glands,
• scalp, forehead, and upper eyelids.
• Maxillary - sensory, fibers transmit impulses from the upper teeth, upper gum, upper lip,
• lining of the palate, and skin of the face.
• mandibular - sensory fibers transmit impulses from the scalp, skin of the jaw, lower
• teeth, lower gum, and lower lip. Impulses of mastication and to muscles in the
• floor of the mouth.

VI - abducens - primarily motor - transmit impulses to muscles that move the eyes.

VII - mixed - transmit impulses associated with taste receptors of the anterior tongue, facial expressions, tear glands, and salivary glands

VIII - sensory - equilibrium, sense of hearing

• IX - mixed - pharynx, tonsils, posterior tongue, and carotid arteries, salivary glands, and
• muscles of the pharynx used in swallowing.

• X - mixed
• somatic motor fibers transmit impulses to muscles associated with speech
• and swallowing; autonomic motor fibers trasmit impulses to the viscera of the
• thorax and abdomen.
• sensory fibers transmit impulses from the pharynx, larynx, esophagus, and viscera of the
• thorax and abdomen.

XI - primarily motor - palate, pharynx, and larynx, muscles of the neck and back

XII - primarily motor - move the tongue

• Olfactory
• Optic
• Oculomotor
• Trochlear
• Trigeminal
• Abducens
• Facial
• Vestibulocochlear
• Glossopharyngeal
• Vagus
• Accessory
• Hypoglossal