Cranial Nerves

• sensory: sense of smell

  I. Olfactory
• sensory: sense of vision

  II. Optic
• motor: eye movement, pupil size, lens shape

  III. Oculomotor
• motor: eye movement

  IV. Trochlear
• sensory: sensation of the head and face including eyes and oral cavity

  motor: middle ear muscle, mastication muscle for chewing, palatine muscle and throat muscle;

  V. Trigeminal
• motor: eye movement

  VI. Abducens
• sensory: sense of taste in the anterior 2/3 tongue motor: facial expressions, submandibular and sublingual salivary glands of the mouth, lacrimal glands of the eye

  VII. Facial
• sensory: sense of hearing and balance

  VIII.Vestibulocochlear
• – sensory: sense of taste in the posterior 1/3 tongue, tactile sensation of posterior tongue, middle ear, pharynx, sensory receptors from carotid arteries that monitor BP, blood pH, oxygen and carbon dioxide levels

  motor: swallowing, parotid salivary gland

  IX. Glossopharyngeal
• sensory: sensation in the larynx, neck, thorax, abdominal organs, sensory receptors in the aortic arch that monitor BP, blood pH, oxygen and carbon dioxide levels

  motor: muscles of palate, pharynx, larynx, lungs, kidneys, heart rate and digestion

  X. Vagus
• motor: head and shoulder movement

  XI. Accessory
• – motor: tongue movement

  XII. Hypoglossal